Học Web

Tạo popup đăng nhập, đăng ký với HTML, CSS, và JS

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Việc tạo popup đăng nhập & đăng ký giúp website của bạn trở lên đẹp và hoàn hảo hơn trong mắt người sử dụng. Hơn hết, việc tạo form đăng nhập popup lên sẽ không làm gián đoạn trải nghiệm người dùng, người dùng không cần đợi website tải trang đăng nhập. Bài viết này sẽ hướng dẫn bạn tạo popup đăng nhập và đăng ký đẹp mê ly chỉ trong ít phút.

Bài viết này mình sẽ hướng dẫn bạn cách tạo ra một form đăng nhập & đăng ký trên cửa sổ popup và làm mờ nền xung quanh giống như ảnh dưới đây. Bạn có thể xem demo hoàn thiện ở phía cuối bài viết này.

NỘI DUNG BÀI VIẾT

Cách tạo popup đăng nhập

Ý tưởng bài toán

Khi người dùng truy cập website, sẽ có 2 menu Đăng nhập và Đăng ký ở góc trên cùng bên trái. Khi người dùng click vào 1 trong 2 button đó thì popup sẽ hiện lên tương ứng với button mà người dùng click.
Chúng ta sẽ tạo popup đăng nhập và đăng ký trên cùng 1 cửa sổ. Việc này giúp cho người dùng có thể dễ dàng chuyển qua lại nếu trong trường hợp chưa hoặc đã có tài khoản.
Form popup đăng nhập sẽ có giao diện cho chức năng Ghi nhớ mật khẩu & Quên mật khẩu
Form popup đăng ký sẽ có giao diện cho chức năng điền các thông tin tài khoản, mật khẩu có thể ẩn/hiện, chấp nhận điều khoản.
Form popup quên mật khẩu có giao diện cho chức năng người dùng điền email để lấy lại mất khẩu.
Người dùng nhấn ESC trên bàn phím hoặc click vào vị trí bất kỳ bên ngoài form popup đăng nhập & đăng ký sẽ đóng cửa sổ popup lại.
Báo lỗi chi tiết trong trường hợp người dùng nhập sai hoặc thiếu thông tin cần thiết.

Ý tưởng triển khai

Tạo trang web demo, có 2 button đăng nhập và đăng ký
Tạo form có 2 tab đăng nhập & đăng ký ở trên, tạo event cho sự kiện đổi form.
Tạo event click button và mở tab poup đăng nhập hoặc đăng ký tương ứng
Tạo event cho 1 số animation trên popup form
Kiểm tra form hợp lệ

Tạo popup đăng nhập & đăng ký

Code HTML

<header role="banner">
  <div id="cd-logo">
    <a href="#0">
      <img src="https://nguyenvanhieu.vn/wp-content/uploads/2020/10/cd-logo.png" alt="Logo">
    </a>
  </div>
  <nav class="main-nav">
    <ul>
      <!-- inser more links here -->
      <li>
        <a class="cd-signin" href="#0">Đăng nhập
        </a>
      </li>
      <li>
        <a class="cd-signup" href="#0">Đăng ký
        </a>
      </li>
    </ul>
  </nav>
</header>
<div class="cd-user-modal"> 
  <!-- this is the entire modal form, including the background -->
  <div class="cd-user-modal-container"> 
    <!-- this is the container wrapper -->
    <ul class="cd-switcher">
      <li>
        <a href="#0">Đăng nhập
        </a>
      </li>
      <li>
        <a href="#0">Tạo tài khoản
        </a>
      </li>
    </ul>
    <div id="cd-login"> 
      <!-- log in form -->
      <form class="cd-form">
        <p class="fieldset">
          <label class="image-replace cd-email" for="signin-email">Email
          </label>
          <input class="full-width has-padding has-border" id="signin-email" type="email" placeholder="E-mail">
          <span class="cd-error-message">Email không được bỏ trống!
          </span>
        </p>
        <p class="fieldset">
          <label class="image-replace cd-password" for="signin-password">Password
          </label>
          <input class="full-width has-padding has-border" id="signin-password" type="text"  placeholder="Password">
          <a href="#0" class="hide-password">Hide
          </a>
          <span class="cd-error-message">Password không được bỏ trống!
          </span>
        </p>
        <p class="fieldset">
          <input type="checkbox" id="remember-me" checked>
          <label for="remember-me">Nhớ đăng nhập
          </label>
        </p>
        <p class="fieldset">
          <input class="full-width" type="submit" value="Đăng nhập">
        </p>
      </form>
      <p class="cd-form-bottom-message">
        <a href="#0">Quên mật khẩu?
        </a>
      </p>
      <!-- <a href="#0" class="cd-close-form">Close</a> -->
    </div> 
    <!-- cd-login -->
    <div id="cd-signup"> 
      <!-- sign up form -->
      <form class="cd-form">
        <p class="fieldset">
          <label class="image-replace cd-username" for="signup-username">Username
          </label>
          <input class="full-width has-padding has-border" id="signup-username" type="text" placeholder="Username">
          <span class="cd-error-message">Username không được bỏ trống!
          </span>
        </p>
        <p class="fieldset">
          <label class="image-replace cd-email" for="signup-email">Email
          </label>
          <input class="full-width has-padding has-border" id="signup-email" type="email" placeholder="E-mail">
          <span class="cd-error-message">Email không được bỏ trống!
          </span>
        </p>
        <p class="fieldset">
          <label class="image-replace cd-password" for="signup-password">Password
          </label>
          <input class="full-width has-padding has-border" id="signup-password" type="text"  placeholder="Password">
          <a href="#0" class="hide-password">Hide
          </a>
          <span class="cd-error-message">Password không được bỏ trống!
          </span>
        </p>
        <p class="fieldset">
          <input type="checkbox" id="accept-terms">
          <label for="accept-terms">Tôi đồng ý với 
            <a href="#0">Điều khoản & Chính sách
            </a>
          </label>
        </p>
        <p class="fieldset">
          <input class="full-width has-padding" type="submit" value="Tạo tài khoản">
        </p>
      </form>
      <!-- <a href="#0" class="cd-close-form">Close</a> -->
    </div> 
    <!-- cd-signup -->
    <div id="cd-reset-password"> 
      <!-- reset password form -->
      <p class="cd-form-message">Bạn quên mật khẩu? Vui lòng nhập email của bạn và chúng tôi sẽ gửi cho bạn một email có đường dẫn để thay đổi mật khẩu.
      </p>
      <form class="cd-form">
        <p class="fieldset">
          <label class="image-replace cd-email" for="reset-email">Email
          </label>
          <input class="full-width has-padding has-border" id="reset-email" type="email" placeholder="E-mail">
          <span class="cd-error-message">Email không được bỏ trống!
          </span>
        </p>
        <p class="fieldset">
          <input class="full-width has-padding" type="submit" value="Reset password">
        </p>
      </form>
      <p class="cd-form-bottom-message">
        <a href="#0">Quay lại đăng nhập
        </a>
      </p>
    </div> 
    <!-- cd-reset-password -->
    <a href="#0" class="cd-close-form">Close
    </a>
  </div> 
  <!-- cd-user-modal-container -->
</div> 
<!-- cd-user-modal -->

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</a>

</div>

<ul>

<li>

<a class="cd-signin" href="#0">Đăng nhập

</a>

</li>

<li>

<a class="cd-signup" href="#0">Đăng ký

</a>

</li>

</ul>

</nav>

</header>

<li>

<a href="#0">Đăng nhập

</a>

</li>

<li>

<a href="#0">Tạo tài khoản

</a>

</li>

</ul>

<label class="image-replace cd-email" for="signin-email">Email

</label>

<span class="cd-error-message">Email không được bỏ trống!

</span>

</p>

<label class="image-replace cd-password" for="signin-password">Password

</label>

<a href="#0" class="hide-password">Hide

</a>

<span class="cd-error-message">Password không được bỏ trống!

</span>

</p>

<label for="remember-me">Nhớ đăng nhập

</label>

</p>

</p>

</form>

<a href="#0">Quên mật khẩu?

</a>

</p>

</div>

<label class="image-replace cd-username" for="signup-username">Username

</label>

<span class="cd-error-message">Username không được bỏ trống!

</span>

</p>

<label class="image-replace cd-email" for="signup-email">Email

</label>

<span class="cd-error-message">Email không được bỏ trống!

</span>

</p>

<label class="image-replace cd-password" for="signup-password">Password

</label>

<a href="#0" class="hide-password">Hide

</a>

<span class="cd-error-message">Password không được bỏ trống!

</span>

</p>

<label for="accept-terms">Tôi đồng ý với

<a href="#0">Điều khoản & Chính sách

</a>

</label>

</p>

</p>

</form>

</div>

<p class="cd-form-message">Bạn quên mật khẩu? Vui lòng nhập email của bạn và chúng tôi sẽ gửi cho bạn một email có đường dẫn để thay đổi mật khẩu.

</p>

<label class="image-replace cd-email" for="reset-email">Email

</label>

<span class="cd-error-message">Email không được bỏ trống!

</span>

</p>

</p>

</form>

<a href="#0">Quay lại đăng nhập

</a>

</p>

</div>

<a href="#0" class="cd-close-form">Close

</a>

</div>

</div>

Code CSS

Lưu ý:

Phần CSS này sử dụng CSS3 để có các hiệu ứng thay vì phải dùng Javascript

* {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
  display: block;
}
body {
  line-height: 1;
}
ol, ul {
  list-style: none;
}
blockquote, q {
  quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
  content: '';
  content: none;
}
table {
  border-collapse: collapse;
  border-spacing: 0;
}
/* -------------------------------- 
Primary style
-------------------------------- */
html * {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
*, *:after, *:before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}
body {
  font-size: 100%;
  font-family: "PT Sans", sans-serif;
  color: #505260;
  background-color: #454751;
}
a {
  color: #2f889a;
  text-decoration: none;
}
img {
  max-width: 100%;
}
input, textarea {
  font-family: "PT Sans", sans-serif;
  font-size: 16px;
  font-size: 1rem;
}
input::-ms-clear, textarea::-ms-clear {
  display: none;
}
/* -------------------------------- 
xcody-info 
-------------------------------- */
#cody-info {
  position: relative;
  background: #FFF;
  height: 44px;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
}
#cody-info .cody-info-logo {
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -15px;
  margin-top: -13px;
}
#cody-info .cody-info-logo svg {
  display: block;
  -webkit-transition: opacity, 0.2s;
  -moz-transition: opacity, 0.2s;
  transition: opacity, 0.2s;
}
#cody-info .cody-info-logo svg:hover {
  opacity: .9;
}
#cody-info .cody-info-logo .cody-info-logo-svg {
  fill: #343642;
}
#cody-info li {
  position: absolute;
  top: 0;
}
#cody-info li:first-child {
  left: 0;
}
#cody-info li:last-child {
  right: 0;
}
#cody-info li a {
  display: block;
  width: 44px;
  height: 44px;
  position: relative;
  -webkit-transition: background 0.2s;
  -moz-transition: background 0.2s;
  transition: background 0.2s;
}
#cody-info li a:hover {
  background-color: #29889b;
}
#cody-info li a:hover .cody-info-buttons-svg {
  fill: #FFF;
}
#cody-info li svg {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -16px;
  margin-left: -16px;
}
#cody-info li .cody-info-buttons-svg {
  fill: #29889b;
}
#cody-info.cody-info-bottom {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 1;
  box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.1);
}
#cody-info::after {
  content: '';
  display: table;
  clear: both;
}
@media only screen and (min-width: 600px) {
  #cody-info {
    height: 60px;
  }
  #cody-info li a {
    height: 60px;
    width: 60px;
  }
}
/* -------------------------------- 
Main components 
-------------------------------- */
header[role=banner] {
  position: relative;
  height: 50px;
  background: #343642;
}
header[role=banner] #cd-logo {
  float: left;
  margin: 4px 0 0 5%;
  /* reduce logo size on mobile and make sure it is left aligned with the transform-origin property */
  -webkit-transform-origin: 0 50%;
  -moz-transform-origin: 0 50%;
  -ms-transform-origin: 0 50%;
  -o-transform-origin: 0 50%;
  transform-origin: 0 50%;
  -webkit-transform: scale(0.8);
  -moz-transform: scale(0.8);
  -ms-transform: scale(0.8);
  -o-transform: scale(0.8);
  transform: scale(0.8);
}
header[role=banner] #cd-logo img {
  display: block;
}
header[role=banner]::after {
  /* clearfix */
  content: '';
  display: table;
  clear: both;
}
@media only screen and (min-width: 768px) {
  header[role=banner] {
    height: 80px;
  }
  header[role=banner] #cd-logo {
    margin: 20px 0 0 5%;
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    -o-transform: scale(1);
    transform: scale(1);
  }
}
.main-nav {
  float: right;
  margin-right: 5%;
  width: 44px;
  height: 100%;
  background: url("../img/cd-icon-menu.svg") no-repeat center center;
  cursor: pointer;
}
.main-nav ul {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  -webkit-transform: translateY(-100%);
  -moz-transform: translateY(-100%);
  -ms-transform: translateY(-100%);
  -o-transform: translateY(-100%);
  transform: translateY(-100%);
}
.main-nav ul.is-visible {
  -webkit-transform: translateY(50px);
  -moz-transform: translateY(50px);
  -ms-transform: translateY(50px);
  -o-transform: translateY(50px);
  transform: translateY(50px);
}
.main-nav a {
  display: block;
  height: 50px;
  line-height: 50px;
  padding-left: 5%;
  background: #292a34;
  border-top: 1px solid #3b3d4b;
  color: #FFF;
}
@media only screen and (min-width: 768px) {
  .main-nav {
    width: auto;
    height: auto;
    background: none;
    cursor: auto;
  }
  .main-nav ul {
    position: static;
    width: auto;
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    -o-transform: translateY(0);
    transform: translateY(0);
    line-height: 80px;
  }
  .main-nav ul.is-visible {
    -webkit-transform: translateY(0);
    -moz-transform: translateY(0);
    -ms-transform: translateY(0);
    -o-transform: translateY(0);
    transform: translateY(0);
  }
  .main-nav li {
    display: inline-block;
    margin-left: 1em;
  }
  .main-nav li:nth-last-child(2) {
    margin-left: 2em;
  }
  .main-nav a {
    display: inline-block;
    height: auto;
    line-height: normal;
    background: transparent;
  }
  .main-nav a.cd-signin, .main-nav a.cd-signup {
    padding: .6em 1em;
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 50em;
  }
  .main-nav a.cd-signup {
    background: #2f889a;
    border: none;
  }
}
/* -------------------------------- 
xsigin/signup popup 
-------------------------------- */
.cd-user-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(52, 54, 66, 0.9);
  z-index: 3;
  overflow-y: auto;
  cursor: pointer;
  visibility: hidden;
  opacity: 0;
  -webkit-transition: opacity 0.3s 0, visibility 0 0.3s;
  -moz-transition: opacity 0.3s 0, visibility 0 0.3s;
  transition: opacity 0.3s 0, visibility 0 0.3s;
}
.cd-user-modal.is-visible {
  visibility: visible;
  opacity: 1;
  -webkit-transition: opacity 0.3s 0, visibility 0 0;
  -moz-transition: opacity 0.3s 0, visibility 0 0;
  transition: opacity 0.3s 0, visibility 0 0;
}
.cd-user-modal.is-visible .cd-user-modal-container {
  -webkit-transform: translateY(0);
  -moz-transform: translateY(0);
  -ms-transform: translateY(0);
  -o-transform: translateY(0);
  transform: translateY(0);
}
.cd-user-modal-container {
  position: relative;
  width: 90%;
  max-width: 600px;
  background: #FFF;
  margin: 3em auto 4em;
  cursor: auto;
  border-radius: 0.25em;
  -webkit-transform: translateY(-30px);
  -moz-transform: translateY(-30px);
  -ms-transform: translateY(-30px);
  -o-transform: translateY(-30px);
  transform: translateY(-30px);
  -webkit-transition-property: -webkit-transform;
  -moz-transition-property: -moz-transform;
  transition-property: transform;
  -webkit-transition-duration: 0.3s;
  -moz-transition-duration: 0.3s;
  transition-duration: 0.3s;
}
.cd-user-modal-container .cd-switcher:after {
  content: "";
  display: table;
  clear: both;
}
.cd-user-modal-container .cd-switcher li {
  width: 50%;
  float: left;
  text-align: center;
}
.cd-user-modal-container .cd-switcher li:first-child a {
  border-radius: .25em 0 0 0;
}
.cd-user-modal-container .cd-switcher li:last-child a {
  border-radius: 0 .25em 0 0;
}
.cd-user-modal-container .cd-switcher a {
  display: block;
  width: 100%;
  height: 50px;
  line-height: 50px;
  background: #d2d8d8;
  color: #809191;
}
.cd-user-modal-container .cd-switcher a.selected {
  background: #FFF;
  color: #505260;
}
@media only screen and (min-width: 600px) {
  .cd-user-modal-container {
    margin: 4em auto;
  }
  .cd-user-modal-container .cd-switcher a {
    height: 70px;
    line-height: 70px;
  }
}
.cd-form {
  padding: 1.4em;
}
.cd-form .fieldset {
  position: relative;
  margin: 1.4em 0;
}
.cd-form .fieldset:first-child {
  margin-top: 0;
}
.cd-form .fieldset:last-child {
  margin-bottom: 0;
}
.cd-form label {
  font-size: 14px;
  font-size: 0.875rem;
}
.cd-form label.image-replace {
  /* replace text with an icon */
  display: inline-block;
  position: absolute;
  left: 15px;
  top: 50%;
  bottom: auto;
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);
  height: 20px;
  width: 20px;
  overflow: hidden;
  text-indent: 100%;
  white-space: nowrap;
  color: transparent;
  text-shadow: none;
  background-repeat: no-repeat;
  background-position: 50% 0;
}
.cd-form label.cd-username {
  background-image: url("../img/cd-icon-username.svg");
}
.cd-form label.cd-email {
  background-image: url("../img/cd-icon-email.svg");
}
.cd-form label.cd-password {
  background-image: url("../img/cd-icon-password.svg");
}
.cd-form input {
  margin: 0;
  padding: 0;
  border-radius: 0.25em;
}
.cd-form input.full-width {
  width: 100%;
}
.cd-form input.has-padding {
  padding: 12px 20px 12px 50px;
}
.cd-form input.has-border {
  border: 1px solid #d2d8d8;
  -webkit-appearance: none;
  -moz-appearance: none;
  -ms-appearance: none;
  -o-appearance: none;
  appearance: none;
}
.cd-form input.has-border:focus {
  border-color: #343642;
  box-shadow: 0 0 5px rgba(52, 54, 66, 0.1);
  outline: none;
}
.cd-form input.has-error {
  border: 1px solid #d76666;
}
.cd-form input[type=password] {
  /* space left for the HIDE button */
  padding-right: 65px;
}
.cd-form input[type=submit] {
  padding: 16px 0;
  cursor: pointer;
  background: #2f889a;
  color: #FFF;
  font-weight: bold;
  border: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  -ms-appearance: none;
  -o-appearance: none;
  appearance: none;
}
.no-touch .cd-form input[type=submit]:hover, .no-touch .cd-form input[type=submit]:focus {
  background: #3599ae;
  outline: none;
}
.cd-form .hide-password {
  display: inline-block;
  position: absolute;
  right: 0;
  top: 0;
  padding: 6px 15px;
  border-left: 1px solid #d2d8d8;
  top: 50%;
  bottom: auto;
  -webkit-transform: translateY(-50%);
  -moz-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  -o-transform: translateY(-50%);
  transform: translateY(-50%);
  font-size: 14px;
  font-size: 0.875rem;
  color: #343642;
}
.cd-form .cd-error-message {
  display: inline-block;
  position: absolute;
  left: -5px;
  bottom: -35px;
  background: rgba(215, 102, 102, 0.9);
  padding: .8em;
  z-index: 2;
  color: #FFF;
  font-size: 13px;
  font-size: 0.8125rem;
  border-radius: 0.25em;
  /* prevent click and touch events */
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
  -webkit-transition: opacity 0.2s 0, visibility 0 0.2s;
  -moz-transition: opacity 0.2s 0, visibility 0 0.2s;
  transition: opacity 0.2s 0, visibility 0 0.2s;
}
.cd-form .cd-error-message::after {
  /* triangle */
  content: '';
  position: absolute;
  left: 22px;
  bottom: 100%;
  height: 0;
  width: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid rgba(215, 102, 102, 0.9);
}
.cd-form .cd-error-message.is-visible {
  opacity: 1;
  visibility: visible;
  -webkit-transition: opacity 0.2s 0, visibility 0 0;
  -moz-transition: opacity 0.2s 0, visibility 0 0;
  transition: opacity 0.2s 0, visibility 0 0;
}
@media only screen and (min-width: 600px) {
  .cd-form {
    padding: 2em;
  }
  .cd-form .fieldset {
    margin: 2em 0;
  }
  .cd-form .fieldset:first-child {
    margin-top: 0;
  }
  .cd-form .fieldset:last-child {
    margin-bottom: 0;
  }
  .cd-form input.has-padding {
    padding: 16px 20px 16px 50px;
  }
  .cd-form input[type=submit] {
    padding: 16px 0;
  }
}
.cd-form-message {
  padding: 1.4em 1.4em 0;
  font-size: 14px;
  font-size: 0.875rem;
  line-height: 1.4;
  text-align: center;
}
@media only screen and (min-width: 600px) {
  .cd-form-message {
    padding: 2em 2em 0;
  }
}
.cd-form-bottom-message {
  position: absolute;
  width: 100%;
  left: 0;
  bottom: -30px;
  text-align: center;
  font-size: 14px;
  font-size: 0.875rem;
}
.cd-form-bottom-message a {
  color: #FFF;
  text-decoration: underline;
}
.cd-close-form {
  /* form X button on top right */
  display: block;
  position: absolute;
  width: 40px;
  height: 40px;
  right: 0;
  top: -40px;
  background: url("../img/cd-icon-close.svg") no-repeat center center;
  text-indent: 100%;
  white-space: nowrap;
  overflow: hidden;
}
@media only screen and (min-width: 1170px) {
  .cd-close-form {
    display: none;
  }
}
#cd-login, #cd-signup, #cd-reset-password {
  display: none;
}
#cd-login.is-selected, #cd-signup.is-selected, #cd-reset-password.is-selected {
  display: block;
}

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* {

margin: 0;

padding: 0;

border: 0;

font-size: 100%;

font: inherit;

vertical-align: baseline;

}

/* HTML5 display-role reset for older browsers */

article, aside, details, figcaption, figure,

footer, header, hgroup, menu, nav, section {

display: block;

}

body {

line-height: 1;

}

ol, ul {

list-style: none;

}

blockquote, q {

quotes: none;

}

blockquote:before, blockquote:after,

q:before, q:after {

content: '';

content: none;

}

table {

border-collapse: collapse;

border-spacing: 0;

}

/* --------------------------------

Primary style

-------------------------------- */

html * {

-webkit-font-smoothing: antialiased;

-moz-osx-font-smoothing: grayscale;

}

*, *:after, *:before {

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

box-sizing: border-box;

}

body {

font-size: 100%;

font-family: "PT Sans", sans-serif;

color: #505260;

background-color: #454751;

}

a {

color: #2f889a;

text-decoration: none;

}

img {

max-width: 100%;

}

input, textarea {

font-family: "PT Sans", sans-serif;

font-size: 16px;

font-size: 1rem;

}

input::-ms-clear, textarea::-ms-clear {

display: none;

}

/* --------------------------------

xcody-info

-------------------------------- */

#cody-info {

position: relative;

background: #FFF;

height: 44px;

box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);

}

#cody-info .cody-info-logo {

position: absolute;

left: 50%;

top: 50%;

margin-left: -15px;

margin-top: -13px;

}

#cody-info .cody-info-logo svg {

display: block;

-webkit-transition: opacity, 0.2s;

-moz-transition: opacity, 0.2s;

transition: opacity, 0.2s;

}

#cody-info .cody-info-logo svg:hover {

opacity: .9;

}

#cody-info .cody-info-logo .cody-info-logo-svg {

fill: #343642;

}

#cody-info li {

position: absolute;

top: 0;

}

#cody-info li:first-child {

left: 0;

}

#cody-info li:last-child {

right: 0;

}

#cody-info li a {

display: block;

width: 44px;

height: 44px;

position: relative;

-webkit-transition: background 0.2s;

-moz-transition: background 0.2s;

transition: background 0.2s;

}

#cody-info li a:hover {

background-color: #29889b;

}

#cody-info li a:hover .cody-info-buttons-svg {

fill: #FFF;

}

#cody-info li svg {

display: block;

position: absolute;

top: 50%;

left: 50%;

margin-top: -16px;

margin-left: -16px;

}

#cody-info li .cody-info-buttons-svg {

fill: #29889b;

}

#cody-info.cody-info-bottom {

width: 100%;

position: fixed;

bottom: 0;

left: 0;

z-index: 1;

box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.1);

}

#cody-info::after {

content: '';

display: table;

clear: both;

}

@media only screen and (min-width: 600px) {

#cody-info {

height: 60px;

}

#cody-info li a {

height: 60px;

width: 60px;

}

/* --------------------------------

Main components

-------------------------------- */

header[role=banner] {

position: relative;

height: 50px;

background: #343642;

}

header[role=banner] #cd-logo {

float: left;

margin: 4px 0 0 5%;

/* reduce logo size on mobile and make sure it is left aligned with the transform-origin property */

-webkit-transform-origin: 0 50%;

-moz-transform-origin: 0 50%;

-ms-transform-origin: 0 50%;

-o-transform-origin: 0 50%;

transform-origin: 0 50%;

-webkit-transform: scale(0.8);

-moz-transform: scale(0.8);

-ms-transform: scale(0.8);

-o-transform: scale(0.8);

transform: scale(0.8);

}

header[role=banner] #cd-logo img {

display: block;

}

header[role=banner]::after {

/* clearfix */

content: '';

display: table;

clear: both;

}

@media only screen and (min-width: 768px) {

header[role=banner] {

height: 80px;

}

header[role=banner] #cd-logo {

margin: 20px 0 0 5%;

-webkit-transform: scale(1);

-moz-transform: scale(1);

-ms-transform: scale(1);

-o-transform: scale(1);

transform: scale(1);

}

.main-nav {

float: right;

margin-right: 5%;

width: 44px;

height: 100%;

background: url("../img/cd-icon-menu.svg") no-repeat center center;

cursor: pointer;

}

.main-nav ul {

position: absolute;

top: 0;

left: 0;

width: 100%;

-webkit-transform: translateY(-100%);

-moz-transform: translateY(-100%);

-ms-transform: translateY(-100%);

-o-transform: translateY(-100%);

transform: translateY(-100%);

}

.main-nav ul.is-visible {

-webkit-transform: translateY(50px);

-moz-transform: translateY(50px);

-ms-transform: translateY(50px);

-o-transform: translateY(50px);

transform: translateY(50px);

}

.main-nav a {

display: block;

height: 50px;

line-height: 50px;

padding-left: 5%;

background: #292a34;

border-top: 1px solid #3b3d4b;

color: #FFF;

}

@media only screen and (min-width: 768px) {

.main-nav {

width: auto;

height: auto;

background: none;

cursor: auto;

}

.main-nav ul {

position: static;

width: auto;

-webkit-transform: translateY(0);

-moz-transform: translateY(0);

-ms-transform: translateY(0);

-o-transform: translateY(0);

transform: translateY(0);

line-height: 80px;

}

.main-nav ul.is-visible {

-webkit-transform: translateY(0);

-moz-transform: translateY(0);

-ms-transform: translateY(0);

-o-transform: translateY(0);

transform: translateY(0);

}

.main-nav li {

display: inline-block;

margin-left: 1em;

}

.main-nav li:nth-last-child(2) {

margin-left: 2em;

}

.main-nav a {

display: inline-block;

height: auto;

line-height: normal;

background: transparent;

}

.main-nav a.cd-signin, .main-nav a.cd-signup {

padding: .6em 1em;

border: 1px solid rgba(255, 255, 255, 0.6);

border-radius: 50em;

}

.main-nav a.cd-signup {

background: #2f889a;

border: none;

}

/* --------------------------------

xsigin/signup popup

-------------------------------- */

.cd-user-modal {

position: fixed;

top: 0;

left: 0;

width: 100%;

height: 100%;

background: rgba(52, 54, 66, 0.9);

z-index: 3;

overflow-y: auto;

cursor: pointer;

visibility: hidden;

opacity: 0;

-webkit-transition: opacity 0.3s 0, visibility 0 0.3s;

-moz-transition: opacity 0.3s 0, visibility 0 0.3s;

transition: opacity 0.3s 0, visibility 0 0.3s;

}

.cd-user-modal.is-visible {

visibility: visible;

opacity: 1;

-webkit-transition: opacity 0.3s 0, visibility 0 0;

-moz-transition: opacity 0.3s 0, visibility 0 0;

transition: opacity 0.3s 0, visibility 0 0;

}

.cd-user-modal.is-visible .cd-user-modal-container {

-webkit-transform: translateY(0);

-moz-transform: translateY(0);

-ms-transform: translateY(0);

-o-transform: translateY(0);

transform: translateY(0);

}

.cd-user-modal-container {

position: relative;

width: 90%;

max-width: 600px;

background: #FFF;

margin: 3em auto 4em;

cursor: auto;

border-radius: 0.25em;

-webkit-transform: translateY(-30px);

-moz-transform: translateY(-30px);

-ms-transform: translateY(-30px);

-o-transform: translateY(-30px);

transform: translateY(-30px);

-webkit-transition-property: -webkit-transform;

-moz-transition-property: -moz-transform;

transition-property: transform;

-webkit-transition-duration: 0.3s;

-moz-transition-duration: 0.3s;

transition-duration: 0.3s;

}

.cd-user-modal-container .cd-switcher:after {

content: "";

display: table;

clear: both;

}

.cd-user-modal-container .cd-switcher li {

width: 50%;

float: left;

text-align: center;

}

.cd-user-modal-container .cd-switcher li:first-child a {

border-radius: .25em 0 0 0;

}

.cd-user-modal-container .cd-switcher li:last-child a {

border-radius: 0 .25em 0 0;

}

.cd-user-modal-container .cd-switcher a {

display: block;

width: 100%;

height: 50px;

line-height: 50px;

background: #d2d8d8;

color: #809191;

}

.cd-user-modal-container .cd-switcher a.selected {

background: #FFF;

color: #505260;

}

@media only screen and (min-width: 600px) {

.cd-user-modal-container {

margin: 4em auto;

}

.cd-user-modal-container .cd-switcher a {

height: 70px;

line-height: 70px;

}

.cd-form {

padding: 1.4em;

}

.cd-form .fieldset {

position: relative;

margin: 1.4em 0;

}

.cd-form .fieldset:first-child {

margin-top: 0;

}

.cd-form .fieldset:last-child {

margin-bottom: 0;

}

.cd-form label {

font-size: 14px;

font-size: 0.875rem;

}

.cd-form label.image-replace {

/* replace text with an icon */

display: inline-block;

position: absolute;

left: 15px;

top: 50%;

bottom: auto;

-webkit-transform: translateY(-50%);

-moz-transform: translateY(-50%);

-ms-transform: translateY(-50%);

-o-transform: translateY(-50%);

transform: translateY(-50%);

height: 20px;

width: 20px;

overflow: hidden;

text-indent: 100%;

white-space: nowrap;

color: transparent;

text-shadow: none;

background-repeat: no-repeat;

background-position: 50% 0;

}

.cd-form label.cd-username {

}

.cd-form label.cd-email {

}

.cd-form label.cd-password {

}

.cd-form input {

margin: 0;

padding: 0;

border-radius: 0.25em;

}

.cd-form input.full-width {

width: 100%;

}

.cd-form input.has-padding {

padding: 12px 20px 12px 50px;

}

.cd-form input.has-border {

border: 1px solid #d2d8d8;

-webkit-appearance: none;

-moz-appearance: none;

-ms-appearance: none;

-o-appearance: none;

appearance: none;

}

.cd-form input.has-border:focus {

border-color: #343642;

box-shadow: 0 0 5px rgba(52, 54, 66, 0.1);

outline: none;

}

.cd-form input.has-error {

border: 1px solid #d76666;

}

.cd-form input[type=password] {

/* space left for the HIDE button */

padding-right: 65px;

}

.cd-form input[type=submit] {

padding: 16px 0;

cursor: pointer;

background: #2f889a;

color: #FFF;

font-weight: bold;

border: none;

-webkit-appearance: none;

-moz-appearance: none;

-ms-appearance: none;

-o-appearance: none;

appearance: none;

}

.no-touch .cd-form input[type=submit]:hover, .no-touch .cd-form input[type=submit]:focus {

background: #3599ae;

outline: none;

}

.cd-form .hide-password {

display: inline-block;

position: absolute;

right: 0;

top: 0;

padding: 6px 15px;

border-left: 1px solid #d2d8d8;

top: 50%;

bottom: auto;

-webkit-transform: translateY(-50%);

-moz-transform: translateY(-50%);

-ms-transform: translateY(-50%);

-o-transform: translateY(-50%);

transform: translateY(-50%);

font-size: 14px;

font-size: 0.875rem;

color: #343642;

}

.cd-form .cd-error-message {

display: inline-block;

position: absolute;

left: -5px;

bottom: -35px;

background: rgba(215, 102, 102, 0.9);

padding: .8em;

z-index: 2;

color: #FFF;

font-size: 13px;

font-size: 0.8125rem;

border-radius: 0.25em;

/* prevent click and touch events */

pointer-events: none;

visibility: hidden;

opacity: 0;

-webkit-transition: opacity 0.2s 0, visibility 0 0.2s;

-moz-transition: opacity 0.2s 0, visibility 0 0.2s;

transition: opacity 0.2s 0, visibility 0 0.2s;

}

.cd-form .cd-error-message::after {

/* triangle */

content: '';

position: absolute;

left: 22px;

bottom: 100%;

height: 0;

width: 0;

border-left: 8px solid transparent;

border-right: 8px solid transparent;

border-bottom: 8px solid rgba(215, 102, 102, 0.9);

}

.cd-form .cd-error-message.is-visible {

opacity: 1;

visibility: visible;

-webkit-transition: opacity 0.2s 0, visibility 0 0;

-moz-transition: opacity 0.2s 0, visibility 0 0;

transition: opacity 0.2s 0, visibility 0 0;

}

@media only screen and (min-width: 600px) {

.cd-form {

padding: 2em;

}

.cd-form .fieldset {

margin: 2em 0;

}

.cd-form .fieldset:first-child {

margin-top: 0;

}

.cd-form .fieldset:last-child {

margin-bottom: 0;

}

.cd-form input.has-padding {

padding: 16px 20px 16px 50px;

}

.cd-form input[type=submit] {

padding: 16px 0;

}

.cd-form-message {

padding: 1.4em 1.4em 0;

font-size: 14px;

font-size: 0.875rem;

line-height: 1.4;

text-align: center;

}

@media only screen and (min-width: 600px) {

.cd-form-message {

padding: 2em 2em 0;

}

.cd-form-bottom-message {

position: absolute;

width: 100%;

left: 0;

bottom: -30px;

text-align: center;

font-size: 14px;

font-size: 0.875rem;

}

.cd-form-bottom-message a {

color: #FFF;

text-decoration: underline;

}

.cd-close-form {

/* form X button on top right */

display: block;

position: absolute;

width: 40px;

height: 40px;

right: 0;

top: -40px;

background: url("../img/cd-icon-close.svg") no-repeat center center;

text-indent: 100%;

white-space: nowrap;

overflow: hidden;

}

@media only screen and (min-width: 1170px) {

.cd-close-form {

display: none;

}

#cd-login, #cd-signup, #cd-reset-password {

display: none;

}

#cd-login.is-selected, #cd-signup.is-selected, #cd-reset-password.is-selected {

display: block;

}

Code Javascript

Chúng ta sẽ sử dụng 2 thư viện Javascript jQuery và modernizr để việc code trở nên đơn giản hơn.

Lưu ý:

Phần code kiểm tra hợp lệ mình chỉ demo 1 trường Email trong tab Đăng nhập, bạn có thể tự hoàn thiện nốt nhé.

https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js
https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js

1 2	https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js

jQuery(document).ready(function($){
  var $form_modal = $('.cd-user-modal'),
      $form_login = $form_modal.find('#cd-login'),
      $form_signup = $form_modal.find('#cd-signup'),
      $form_forgot_password = $form_modal.find('#cd-reset-password'),
      $form_modal_tab = $('.cd-switcher'),
      $tab_login = $form_modal_tab.children('li').eq(0).children('a'),
      $tab_signup = $form_modal_tab.children('li').eq(1).children('a'),
      $forgot_password_link = $form_login.find('.cd-form-bottom-message a'),
      $back_to_login_link = $form_forgot_password.find('.cd-form-bottom-message a'),
      $main_nav = $('.main-nav');
  //open modal
  $main_nav.on('click', function(event){
    if( $(event.target).is($main_nav) ) {
      // on mobile open the submenu
      $(this).children('ul').toggleClass('is-visible');
    }
    else {
      // on mobile close submenu
      $main_nav.children('ul').removeClass('is-visible');
      //show modal layer
      $form_modal.addClass('is-visible');
      //show the selected form
      ( $(event.target).is('.cd-signup') ) ? signup_selected() : login_selected();
    }
  }
              );
  //close modal
  $('.cd-user-modal').on('click', function(event){
    if( $(event.target).is($form_modal) || $(event.target).is('.cd-close-form') ) {
      $form_modal.removeClass('is-visible');
    }
  }
                        );
  //close modal when clicking the esc keyboard button
  $(document).keyup(function(event){
    if(event.which=='27'){
      $form_modal.removeClass('is-visible');
    }
  }
                   );
  //switch from a tab to another
  $form_modal_tab.on('click', function(event) {
    event.preventDefault();
    ( $(event.target).is( $tab_login ) ) ? login_selected() : signup_selected();
  }
                    );
  //hide or show password
  $('.hide-password').on('click', function(){
    var $this= $(this),
        $password_field = $this.prev('input');
    ( 'password' == $password_field.attr('type') ) ? $password_field.attr('type', 'text') : $password_field.attr('type', 'password');
    ( 'Hide' == $this.text() ) ? $this.text('Show') : $this.text('Hide');
    //focus and move cursor to the end of input field
    $password_field.putCursorAtEnd();
  }
                        );
  //show forgot-password form 
  $forgot_password_link.on('click', function(event){
    event.preventDefault();
    forgot_password_selected();
  }
                          );
  //back to login from the forgot-password form
  $back_to_login_link.on('click', function(event){
    event.preventDefault();
    login_selected();
  }
                        );
  function login_selected(){
    $form_login.addClass('is-selected');
    $form_signup.removeClass('is-selected');
    $form_forgot_password.removeClass('is-selected');
    $tab_login.addClass('selected');
    $tab_signup.removeClass('selected');
  }
  function signup_selected(){
    $form_login.removeClass('is-selected');
    $form_signup.addClass('is-selected');
    $form_forgot_password.removeClass('is-selected');
    $tab_login.removeClass('selected');
    $tab_signup.addClass('selected');
  }
  function forgot_password_selected(){
    $form_login.removeClass('is-selected');
    $form_signup.removeClass('is-selected');
    $form_forgot_password.addClass('is-selected');
  }
  //Kiểm tra form hợp lệ 
  $form_login.find('input[type="submit"]').on('click', function(event){
    event.preventDefault();
    if ($('#signin-email').val() == ''){
      $form_login.find('input[type="email"]').toggleClass('has-error').next('span').toggleClass('is-visible');
    }
  }
                                             );
  //IE9 placeholder fallback
  //credits http://www.hagenburger.net/BLOG/HTML5-Input-Placeholder-Fix-With-jQuery.html
  if(!Modernizr.input.placeholder){
    $('[placeholder]').focus(function() {
      var input = $(this);
      if (input.val() == input.attr('placeholder')) {
        input.val('');
      }
    }
                            ).blur(function() {
      var input = $(this);
      if (input.val() == '' || input.val() == input.attr('placeholder')) {
        input.val(input.attr('placeholder'));
      }
    }
                                  ).blur();
    $('[placeholder]').parents('form').submit(function() {
      $(this).find('[placeholder]').each(function() {
        var input = $(this);
        if (input.val() == input.attr('placeholder')) {
          input.val('');
        }
      }
                                        )
    }
                                             );
  }
}
                      );
//credits https://css-tricks.com/snippets/jquery/move-cursor-to-end-of-textarea-or-input/
jQuery.fn.putCursorAtEnd = function() {
  return this.each(function() {
    // If this function exists...
    if (this.setSelectionRange) {
      // ... then use it (Doesn't work in IE)
      // Double the length because Opera is inconsistent about whether a carriage return is one character or two. Sigh.
      var len = $(this).val().length * 2;
      this.setSelectionRange(len, len);
    }
    else {
      // ... otherwise replace the contents with itself
      // (Doesn't work in Google Chrome)
      $(this).val($(this).val());
    }
  }
                  );
};
jQuery('#cody-info ul li').eq(1).on('click', function(){
  $('#cody-info').hide();
});

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jQuery(document).ready(function($){

var $form_modal = $('.cd-user-modal'),

$form_login = $form_modal.find('#cd-login'),

$form_signup = $form_modal.find('#cd-signup'),

$form_forgot_password = $form_modal.find('#cd-reset-password'),

$form_modal_tab = $('.cd-switcher'),

$tab_login = $form_modal_tab.children('li').eq(0).children('a'),

$tab_signup = $form_modal_tab.children('li').eq(1).children('a'),

$forgot_password_link = $form_login.find('.cd-form-bottom-message a'),

$back_to_login_link = $form_forgot_password.find('.cd-form-bottom-message a'),

$main_nav = $('.main-nav');

//open modal

$main_nav.on('click', function(event){

if( $(event.target).is($main_nav) ) {

// on mobile open the submenu

$(this).children('ul').toggleClass('is-visible');

}

else {

// on mobile close submenu

$main_nav.children('ul').removeClass('is-visible');

//show modal layer

$form_modal.addClass('is-visible');

//show the selected form

( $(event.target).is('.cd-signup') ) ? signup_selected() : login_selected();

}

);

//close modal

$('.cd-user-modal').on('click', function(event){

if( $(event.target).is($form_modal) || $(event.target).is('.cd-close-form') ) {

$form_modal.removeClass('is-visible');

}

);

//close modal when clicking the esc keyboard button

$(document).keyup(function(event){

if(event.which=='27'){

$form_modal.removeClass('is-visible');

}

);

//switch from a tab to another

$form_modal_tab.on('click', function(event) {

event.preventDefault();

( $(event.target).is( $tab_login ) ) ? login_selected() : signup_selected();

}

);

//hide or show password

$('.hide-password').on('click', function(){

var $this= $(this),

$password_field = $this.prev('input');

( 'password' == $password_field.attr('type') ) ? $password_field.attr('type', 'text') : $password_field.attr('type', 'password');

( 'Hide' == $this.text() ) ? $this.text('Show') : $this.text('Hide');

//focus and move cursor to the end of input field

$password_field.putCursorAtEnd();

}

);

//show forgot-password form

$forgot_password_link.on('click', function(event){

event.preventDefault();

forgot_password_selected();

}

);

//back to login from the forgot-password form

$back_to_login_link.on('click', function(event){

event.preventDefault();

login_selected();

}

);

function login_selected(){

$form_login.addClass('is-selected');

$form_signup.removeClass('is-selected');

$form_forgot_password.removeClass('is-selected');

$tab_login.addClass('selected');

$tab_signup.removeClass('selected');

}

function signup_selected(){

$form_login.removeClass('is-selected');

$form_signup.addClass('is-selected');

$form_forgot_password.removeClass('is-selected');

$tab_login.removeClass('selected');

$tab_signup.addClass('selected');

}

function forgot_password_selected(){

$form_login.removeClass('is-selected');

$form_signup.removeClass('is-selected');

$form_forgot_password.addClass('is-selected');

}

//Kiểm tra form hợp lệ

$form_login.find('input[type="submit"]').on('click', function(event){

event.preventDefault();

if ($('#signin-email').val() == ''){

$form_login.find('input[type="email"]').toggleClass('has-error').next('span').toggleClass('is-visible');

}

);

//IE9 placeholder fallback

//credits http://www.hagenburger.net/BLOG/HTML5-Input-Placeholder-Fix-With-jQuery.html

if(!Modernizr.input.placeholder){

$('[placeholder]').focus(function() {

var input = $(this);

if (input.val() == input.attr('placeholder')) {

input.val('');

}

).blur(function() {

var input = $(this);

if (input.val() == '' || input.val() == input.attr('placeholder')) {

input.val(input.attr('placeholder'));

}

).blur();

$('[placeholder]').parents('form').submit(function() {

$(this).find('[placeholder]').each(function() {

var input = $(this);

if (input.val() == input.attr('placeholder')) {

input.val('');

}

)

}

);

}

);

//credits https://css-tricks.com/snippets/jquery/move-cursor-to-end-of-textarea-or-input/

jQuery.fn.putCursorAtEnd = function() {

return this.each(function() {

// If this function exists...

if (this.setSelectionRange) {

// ... then use it (Doesn't work in IE)

// Double the length because Opera is inconsistent about whether a carriage return is one character or two. Sigh.

var len = $(this).val().length * 2;

this.setSelectionRange(len, len);

}

else {

// ... otherwise replace the contents with itself

// (Doesn't work in Google Chrome)

$(this).val($(this).val());

}

);

};

jQuery('#cody-info ul li').eq(1).on('click', function(){

$('#cody-info').hide();

});

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<!DOCTYPE html>
<html>
  <head>
    <title>Untitled Document
    </title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style type="text/css">
      * {
        margin: 0;
        padding: 0;
        border: 0;
        font-size: 100%;
        font: inherit;
        vertical-align: baseline;
      }
      /* HTML5 display-role reset for older browsers */
      article,
      aside,
      details,
      figcaption,
      figure,
      footer,
      header,
      hgroup,
      menu,
      nav,
      section {
        display: block;
      }
      body {
        line-height: 1;
      }
      ol,
      ul {
        list-style: none;
      }
      blockquote,
      q {
        quotes: none;
      }
      blockquote:before,
      blockquote:after,
      q:before,
      q:after {
        content: "";
        content: none;
      }
      table {
        border-collapse: collapse;
        border-spacing: 0;
      }
      /* -------------------------------- 
      Primary style
      -------------------------------- */
      html * {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
      }
      *,
      *:after,
      *:before {
        -webkit-box-sizing: border-box;
        -moz-box-sizing: border-box;
        box-sizing: border-box;
      }
      body {
        font-size: 100%;
        font-family: "PT Sans", sans-serif;
        color: #505260;
        background-color: #454751;
      }
      a {
        color: #2f889a;
        text-decoration: none;
      }
      img {
        max-width: 100%;
      }
      input,
      textarea {
        font-family: "PT Sans", sans-serif;
        font-size: 16px;
        font-size: 1rem;
      }
      input::-ms-clear,
      textarea::-ms-clear {
        display: none;
      }
      /* -------------------------------- 
      xcody-info 
      -------------------------------- */
      #cody-info {
        position: relative;
        background: #fff;
        height: 44px;
        box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);
      }
      #cody-info .cody-info-logo {
        position: absolute;
        left: 50%;
        top: 50%;
        margin-left: -15px;
        margin-top: -13px;
      }
      #cody-info .cody-info-logo svg {
        display: block;
        -webkit-transition: opacity, 0.2s;
        -moz-transition: opacity, 0.2s;
        transition: opacity, 0.2s;
      }
      #cody-info .cody-info-logo svg:hover {
        opacity: 0.9;
      }
      #cody-info .cody-info-logo .cody-info-logo-svg {
        fill: #343642;
      }
      #cody-info li {
        position: absolute;
        top: 0;
      }
      #cody-info li:first-child {
        left: 0;
      }
      #cody-info li:last-child {
        right: 0;
      }
      #cody-info li a {
        display: block;
        width: 44px;
        height: 44px;
        position: relative;
        -webkit-transition: background 0.2s;
        -moz-transition: background 0.2s;
        transition: background 0.2s;
      }
      #cody-info li a:hover {
        background-color: #29889b;
      }
      #cody-info li a:hover .cody-info-buttons-svg {
        fill: #fff;
      }
      #cody-info li svg {
        display: block;
        position: absolute;
        top: 50%;
        left: 50%;
        margin-top: -16px;
        margin-left: -16px;
      }
      #cody-info li .cody-info-buttons-svg {
        fill: #29889b;
      }
      #cody-info.cody-info-bottom {
        width: 100%;
        position: fixed;
        bottom: 0;
        left: 0;
        z-index: 1;
        box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.1);
      }
      #cody-info::after {
        content: "";
        display: table;
        clear: both;
      }
      @media only screen and (min-width: 600px) {
        #cody-info {
          height: 60px;
        }
        #cody-info li a {
          height: 60px;
          width: 60px;
        }
      }
      /* -------------------------------- 
      Main components 
      -------------------------------- */
      header[role="banner"] {
        position: relative;
        height: 50px;
        background: #343642;
      }
      header[role="banner"] #cd-logo {
        float: left;
        margin: 4px 0 0 5%;
        /* reduce logo size on mobile and make sure it is left aligned with the transform-origin property */
        -webkit-transform-origin: 0 50%;
        -moz-transform-origin: 0 50%;
        -ms-transform-origin: 0 50%;
        -o-transform-origin: 0 50%;
        transform-origin: 0 50%;
        -webkit-transform: scale(0.8);
        -moz-transform: scale(0.8);
        -ms-transform: scale(0.8);
        -o-transform: scale(0.8);
        transform: scale(0.8);
      }
      header[role="banner"] #cd-logo img {
        display: block;
      }
      header[role="banner"]::after {
        /* clearfix */
        content: "";
        display: table;
        clear: both;
      }
      @media only screen and (min-width: 768px) {
        header[role="banner"] {
          height: 80px;
        }
        header[role="banner"] #cd-logo {
          margin: 20px 0 0 5%;
          -webkit-transform: scale(1);
          -moz-transform: scale(1);
          -ms-transform: scale(1);
          -o-transform: scale(1);
          transform: scale(1);
        }
      }
      .main-nav {
        float: right;
        margin-right: 5%;
        width: 44px;
        height: 100%;
        background: url("../img/cd-icon-menu.svg") no-repeat center center;
        cursor: pointer;
      }
      .main-nav ul {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        -webkit-transform: translateY(-100%);
        -moz-transform: translateY(-100%);
        -ms-transform: translateY(-100%);
        -o-transform: translateY(-100%);
        transform: translateY(-100%);
      }
      .main-nav ul.is-visible {
        -webkit-transform: translateY(50px);
        -moz-transform: translateY(50px);
        -ms-transform: translateY(50px);
        -o-transform: translateY(50px);
        transform: translateY(50px);
      }
      .main-nav a {
        display: block;
        height: 50px;
        line-height: 50px;
        padding-left: 5%;
        background: #292a34;
        border-top: 1px solid #3b3d4b;
        color: #fff;
      }
      @media only screen and (min-width: 768px) {
        .main-nav {
          width: auto;
          height: auto;
          background: none;
          cursor: auto;
        }
        .main-nav ul {
          position: static;
          width: auto;
          -webkit-transform: translateY(0);
          -moz-transform: translateY(0);
          -ms-transform: translateY(0);
          -o-transform: translateY(0);
          transform: translateY(0);
          line-height: 80px;
        }
        .main-nav ul.is-visible {
          -webkit-transform: translateY(0);
          -moz-transform: translateY(0);
          -ms-transform: translateY(0);
          -o-transform: translateY(0);
          transform: translateY(0);
        }
        .main-nav li {
          display: inline-block;
          margin-left: 1em;
        }
        .main-nav li:nth-last-child(2) {
          margin-left: 2em;
        }
        .main-nav a {
          display: inline-block;
          height: auto;
          line-height: normal;
          background: transparent;
        }
        .main-nav a.cd-signin,
        .main-nav a.cd-signup {
          padding: 0.6em 1em;
          border: 1px solid rgba(255, 255, 255, 0.6);
          border-radius: 50em;
        }
        .main-nav a.cd-signup {
          background: #2f889a;
          border: none;
        }
      }
      /* -------------------------------- 
      xsigin/signup popup 
      -------------------------------- */
      .cd-user-modal {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(52, 54, 66, 0.9);
        z-index: 3;
        overflow-y: auto;
        cursor: pointer;
        visibility: hidden;
        opacity: 0;
        -webkit-transition: opacity 0.3s 0, visibility 0 0.3s;
        -moz-transition: opacity 0.3s 0, visibility 0 0.3s;
        transition: opacity 0.3s 0, visibility 0 0.3s;
      }
      .cd-user-modal.is-visible {
        visibility: visible;
        opacity: 1;
        -webkit-transition: opacity 0.3s 0, visibility 0 0;
        -moz-transition: opacity 0.3s 0, visibility 0 0;
        transition: opacity 0.3s 0, visibility 0 0;
      }
      .cd-user-modal.is-visible .cd-user-modal-container {
        -webkit-transform: translateY(0);
        -moz-transform: translateY(0);
        -ms-transform: translateY(0);
        -o-transform: translateY(0);
        transform: translateY(0);
      }
      .cd-user-modal-container {
        position: relative;
        width: 90%;
        max-width: 600px;
        background: #fff;
        margin: 3em auto 4em;
        cursor: auto;
        border-radius: 0.25em;
        -webkit-transform: translateY(-30px);
        -moz-transform: translateY(-30px);
        -ms-transform: translateY(-30px);
        -o-transform: translateY(-30px);
        transform: translateY(-30px);
        -webkit-transition-property: -webkit-transform;
        -moz-transition-property: -moz-transform;
        transition-property: transform;
        -webkit-transition-duration: 0.3s;
        -moz-transition-duration: 0.3s;
        transition-duration: 0.3s;
      }
      .cd-user-modal-container .cd-switcher:after {
        content: "";
        display: table;
        clear: both;
      }
      .cd-user-modal-container .cd-switcher li {
        width: 50%;
        float: left;
        text-align: center;
      }
      .cd-user-modal-container .cd-switcher li:first-child a {
        border-radius: 0.25em 0 0 0;
      }
      .cd-user-modal-container .cd-switcher li:last-child a {
        border-radius: 0 0.25em 0 0;
      }
      .cd-user-modal-container .cd-switcher a {
        display: block;
        width: 100%;
        height: 50px;
        line-height: 50px;
        background: #d2d8d8;
        color: #809191;
      }
      .cd-user-modal-container .cd-switcher a.selected {
        background: #fff;
        color: #505260;
      }
      @media only screen and (min-width: 600px) {
        .cd-user-modal-container {
          margin: 4em auto;
        }
        .cd-user-modal-container .cd-switcher a {
          height: 70px;
          line-height: 70px;
        }
      }
      .cd-form {
        padding: 1.4em;
      }
      .cd-form .fieldset {
        position: relative;
        margin: 1.4em 0;
      }
      .cd-form .fieldset:first-child {
        margin-top: 0;
      }
      .cd-form .fieldset:last-child {
        margin-bottom: 0;
      }
      .cd-form label {
        font-size: 14px;
        font-size: 0.875rem;
      }
      .cd-form label.image-replace {
        /* replace text with an icon */
        display: inline-block;
        position: absolute;
        left: 15px;
        top: 50%;
        bottom: auto;
        -webkit-transform: translateY(-50%);
        -moz-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
        -o-transform: translateY(-50%);
        transform: translateY(-50%);
        height: 20px;
        width: 20px;
        overflow: hidden;
        text-indent: 100%;
        white-space: nowrap;
        color: transparent;
        text-shadow: none;
        background-repeat: no-repeat;
        background-position: 50% 0;
      }
      .cd-form label.cd-username {
        background-image: url("../img/cd-icon-username.svg");
      }
      .cd-form label.cd-email {
        background-image: url("../img/cd-icon-email.svg");
      }
      .cd-form label.cd-password {
        background-image: url("../img/cd-icon-password.svg");
      }
      .cd-form input {
        margin: 0;
        padding: 0;
        border-radius: 0.25em;
      }
      .cd-form input.full-width {
        width: 100%;
      }
      .cd-form input.has-padding {
        padding: 12px 20px 12px 50px;
      }
      .cd-form input.has-border {
        border: 1px solid #d2d8d8;
        -webkit-appearance: none;
        -moz-appearance: none;
        -ms-appearance: none;
        -o-appearance: none;
        appearance: none;
      }
      .cd-form input.has-border:focus {
        border-color: #343642;
        box-shadow: 0 0 5px rgba(52, 54, 66, 0.1);
        outline: none;
      }
      .cd-form input.has-error {
        border: 1px solid #d76666;
      }
      .cd-form input[type="password"] {
        /* space left for the HIDE button */
        padding-right: 65px;
      }
      .cd-form input[type="submit"] {
        padding: 16px 0;
        cursor: pointer;
        background: #2f889a;
        color: #fff;
        font-weight: bold;
        border: none;
        -webkit-appearance: none;
        -moz-appearance: none;
        -ms-appearance: none;
        -o-appearance: none;
        appearance: none;
      }
      .no-touch .cd-form input[type="submit"]:hover,
      .no-touch .cd-form input[type="submit"]:focus {
        background: #3599ae;
        outline: none;
      }
      .cd-form .hide-password {
        display: inline-block;
        position: absolute;
        right: 0;
        top: 0;
        padding: 6px 15px;
        border-left: 1px solid #d2d8d8;
        top: 50%;
        bottom: auto;
        -webkit-transform: translateY(-50%);
        -moz-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
        -o-transform: translateY(-50%);
        transform: translateY(-50%);
        font-size: 14px;
        font-size: 0.875rem;
        color: #343642;
      }
      .cd-form .cd-error-message {
        display: inline-block;
        position: absolute;
        left: -5px;
        bottom: -35px;
        background: rgba(215, 102, 102, 0.9);
        padding: 0.8em;
        z-index: 2;
        color: #fff;
        font-size: 13px;
        font-size: 0.8125rem;
        border-radius: 0.25em;
        /* prevent click and touch events */
        pointer-events: none;
        visibility: hidden;
        opacity: 0;
        -webkit-transition: opacity 0.2s 0, visibility 0 0.2s;
        -moz-transition: opacity 0.2s 0, visibility 0 0.2s;
        transition: opacity 0.2s 0, visibility 0 0.2s;
      }
      .cd-form .cd-error-message::after {
        /* triangle */
        content: "";
        position: absolute;
        left: 22px;
        bottom: 100%;
        height: 0;
        width: 0;
        border-left: 8px solid transparent;
        border-right: 8px solid transparent;
        border-bottom: 8px solid rgba(215, 102, 102, 0.9);
      }
      .cd-form .cd-error-message.is-visible {
        opacity: 1;
        visibility: visible;
        -webkit-transition: opacity 0.2s 0, visibility 0 0;
        -moz-transition: opacity 0.2s 0, visibility 0 0;
        transition: opacity 0.2s 0, visibility 0 0;
      }
      @media only screen and (min-width: 600px) {
        .cd-form {
          padding: 2em;
        }
        .cd-form .fieldset {
          margin: 2em 0;
        }
        .cd-form .fieldset:first-child {
          margin-top: 0;
        }
        .cd-form .fieldset:last-child {
          margin-bottom: 0;
        }
        .cd-form input.has-padding {
          padding: 16px 20px 16px 50px;
        }
        .cd-form input[type="submit"] {
          padding: 16px 0;
        }
      }
      .cd-form-message {
        padding: 1.4em 1.4em 0;
        font-size: 14px;
        font-size: 0.875rem;
        line-height: 1.4;
        text-align: center;
      }
      @media only screen and (min-width: 600px) {
        .cd-form-message {
          padding: 2em 2em 0;
        }
      }
      .cd-form-bottom-message {
        position: absolute;
        width: 100%;
        left: 0;
        bottom: -30px;
        text-align: center;
        font-size: 14px;
        font-size: 0.875rem;
      }
      .cd-form-bottom-message a {
        color: #fff;
        text-decoration: underline;
      }
      .cd-close-form {
        /* form X button on top right */
        display: block;
        position: absolute;
        width: 40px;
        height: 40px;
        right: 0;
        top: -40px;
        background: url("../img/cd-icon-close.svg") no-repeat center center;
        text-indent: 100%;
        white-space: nowrap;
        overflow: hidden;
      }
      @media only screen and (min-width: 1170px) {
        .cd-close-form {
          display: none;
        }
      }
      #cd-login,
      #cd-signup,
      #cd-reset-password {
        display: none;
      }
      #cd-login.is-selected,
      #cd-signup.is-selected,
      #cd-reset-password.is-selected {
        display: block;
      }
    </style>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js">
    </script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js">
    </script>
    <script language="javascript">
      jQuery(document).ready(function($){
        var $form_modal = $('.cd-user-modal'),
            $form_login = $form_modal.find('#cd-login'),
            $form_signup = $form_modal.find('#cd-signup'),
            $form_forgot_password = $form_modal.find('#cd-reset-password'),
            $form_modal_tab = $('.cd-switcher'),
            $tab_login = $form_modal_tab.children('li').eq(0).children('a'),
            $tab_signup = $form_modal_tab.children('li').eq(1).children('a'),
            $forgot_password_link = $form_login.find('.cd-form-bottom-message a'),
            $back_to_login_link = $form_forgot_password.find('.cd-form-bottom-message a'),
            $main_nav = $('.main-nav');
        //open modal
        $main_nav.on('click', function(event){
          if( $(event.target).is($main_nav) ) {
            // on mobile open the submenu
            $(this).children('ul').toggleClass('is-visible');
          }
          else {
            // on mobile close submenu
            $main_nav.children('ul').removeClass('is-visible');
            //show modal layer
            $form_modal.addClass('is-visible');
            //show the selected form
            ( $(event.target).is('.cd-signup') ) ? signup_selected() : login_selected();
          }
        }
                    );
        //close modal
        $('.cd-user-modal').on('click', function(event){
          if( $(event.target).is($form_modal) || $(event.target).is('.cd-close-form') ) {
            $form_modal.removeClass('is-visible');
          }
        }
                              );
        //close modal when clicking the esc keyboard button
        $(document).keyup(function(event){
          if(event.which=='27'){
            $form_modal.removeClass('is-visible');
          }
        }
                         );
        //switch from a tab to another
        $form_modal_tab.on('click', function(event) {
          event.preventDefault();
          ( $(event.target).is( $tab_login ) ) ? login_selected() : signup_selected();
        }
                          );
        //hide or show password
        $('.hide-password').on('click', function(){
          var $this= $(this),
              $password_field = $this.prev('input');
          ( 'password' == $password_field.attr('type') ) ? $password_field.attr('type', 'text') : $password_field.attr('type', 'password');
          ( 'Hide' == $this.text() ) ? $this.text('Show') : $this.text('Hide');
          //focus and move cursor to the end of input field
          $password_field.putCursorAtEnd();
        }
                              );
        //show forgot-password form 
        $forgot_password_link.on('click', function(event){
          event.preventDefault();
          forgot_password_selected();
        }
                                );
        //back to login from the forgot-password form
        $back_to_login_link.on('click', function(event){
          event.preventDefault();
          login_selected();
        }
                              );
        function login_selected(){
          $form_login.addClass('is-selected');
          $form_signup.removeClass('is-selected');
          $form_forgot_password.removeClass('is-selected');
          $tab_login.addClass('selected');
          $tab_signup.removeClass('selected');
        }
        function signup_selected(){
          $form_login.removeClass('is-selected');
          $form_signup.addClass('is-selected');
          $form_forgot_password.removeClass('is-selected');
          $tab_login.removeClass('selected');
          $tab_signup.addClass('selected');
        }
        function forgot_password_selected(){
          $form_login.removeClass('is-selected');
          $form_signup.removeClass('is-selected');
          $form_forgot_password.addClass('is-selected');
        }
        //Kiểm tra form hợp lệ 
        $form_login.find('input[type="submit"]').on('click', function(event){
          event.preventDefault();
          if ($('#signin-email').val() == ''){
            $form_login.find('input[type="email"]').toggleClass('has-error').next('span').toggleClass('is-visible');
          }
        }
                                                   );
        //IE9 placeholder fallback
        //credits http://www.hagenburger.net/BLOG/HTML5-Input-Placeholder-Fix-With-jQuery.html
        if(!Modernizr.input.placeholder){
          $('[placeholder]').focus(function() {
            var input = $(this);
            if (input.val() == input.attr('placeholder')) {
              input.val('');
            }
          }
                                  ).blur(function() {
            var input = $(this);
            if (input.val() == '' || input.val() == input.attr('placeholder')) {
              input.val(input.attr('placeholder'));
            }
          }
                                        ).blur();
          $('[placeholder]').parents('form').submit(function() {
            $(this).find('[placeholder]').each(function() {
              var input = $(this);
              if (input.val() == input.attr('placeholder')) {
                input.val('');
              }
            }
                                              )
          }
                                                   );
        }
      }
                            );
      //credits https://css-tricks.com/snippets/jquery/move-cursor-to-end-of-textarea-or-input/
      jQuery.fn.putCursorAtEnd = function() {
        return this.each(function() {
          // If this function exists...
          if (this.setSelectionRange) {
            // ... then use it (Doesn't work in IE)
            // Double the length because Opera is inconsistent about whether a carriage return is one character or two. Sigh.
            var len = $(this).val().length * 2;
            this.setSelectionRange(len, len);
          }
          else {
            // ... otherwise replace the contents with itself
            // (Doesn't work in Google Chrome)
            $(this).val($(this).val());
          }
        }
                        );
      };
      jQuery('#cody-info ul li').eq(1).on('click', function(){
        $('#cody-info').hide();
      }
                                         );
    </script>
  </head>
  <body>
    <header role="banner">
      <div id="cd-logo">
        <a href="#0">
          <img src="https://nguyenvanhieu.vn/wp-content/uploads/2020/10/cd-logo.png" alt="Logo">
        </a>
      </div>
      <nav class="main-nav">
        <ul>
          <!-- inser more links here -->
          <li>
            <a class="cd-signin" href="#0">Đăng nhập
            </a>
          </li>
          <li>
            <a class="cd-signup" href="#0">Đăng ký
            </a>
          </li>
        </ul>
      </nav>
    </header>
    <div class="cd-user-modal"> 
      <!-- this is the entire modal form, including the background -->
      <div class="cd-user-modal-container"> 
        <!-- this is the container wrapper -->
        <ul class="cd-switcher">
          <li>
            <a href="#0">Đăng nhập
            </a>
          </li>
          <li>
            <a href="#0">Tạo tài khoản
            </a>
          </li>
        </ul>
        <div id="cd-login"> 
          <!-- log in form -->
          <form class="cd-form">
            <p class="fieldset">
              <label class="image-replace cd-email" for="signin-email">Email
              </label>
              <input class="full-width has-padding has-border" id="signin-email" type="email" placeholder="E-mail">
              <span class="cd-error-message">Email không được bỏ trống!
              </span>
            </p>
            <p class="fieldset">
              <label class="image-replace cd-password" for="signin-password">Password
              </label>
              <input class="full-width has-padding has-border" id="signin-password" type="text"  placeholder="Password">
              <a href="#0" class="hide-password">Hide
              </a>
              <span class="cd-error-message">Password không được bỏ trống!
              </span>
            </p>
            <p class="fieldset">
              <input type="checkbox" id="remember-me" checked>
              <label for="remember-me">Nhớ đăng nhập
              </label>
            </p>
            <p class="fieldset">
              <input class="full-width" type="submit" value="Đăng nhập">
            </p>
          </form>
          <p class="cd-form-bottom-message">
            <a href="#0">Quên mật khẩu?
            </a>
          </p>
          <!-- <a href="#0" class="cd-close-form">Close</a> -->
        </div> 
        <!-- cd-login -->
        <div id="cd-signup"> 
          <!-- sign up form -->
          <form class="cd-form">
            <p class="fieldset">
              <label class="image-replace cd-username" for="signup-username">Username
              </label>
              <input class="full-width has-padding has-border" id="signup-username" type="text" placeholder="Username">
              <span class="cd-error-message">Username không được bỏ trống!
              </span>
            </p>
            <p class="fieldset">
              <label class="image-replace cd-email" for="signup-email">Email
              </label>
              <input class="full-width has-padding has-border" id="signup-email" type="email" placeholder="E-mail">
              <span class="cd-error-message">Email không được bỏ trống!
              </span>
            </p>
            <p class="fieldset">
              <label class="image-replace cd-password" for="signup-password">Password
              </label>
              <input class="full-width has-padding has-border" id="signup-password" type="text"  placeholder="Password">
              <a href="#0" class="hide-password">Hide
              </a>
              <span class="cd-error-message">Password không được bỏ trống!
              </span>
            </p>
            <p class="fieldset">
              <input type="checkbox" id="accept-terms">
              <label for="accept-terms">Tôi đồng ý với 
                <a href="#0">Điều khoản & Chính sách
                </a>
              </label>
            </p>
            <p class="fieldset">
              <input class="full-width has-padding" type="submit" value="Tạo tài khoản">
            </p>
          </form>
          <!-- <a href="#0" class="cd-close-form">Close</a> -->
        </div> 
        <!-- cd-signup -->
        <div id="cd-reset-password"> 
          <!-- reset password form -->
          <p class="cd-form-message">Bạn quên mật khẩu? Vui lòng nhập email của bạn và chúng tôi sẽ gửi cho bạn một email có đường dẫn để thay đổi mật khẩu.
          </p>
          <form class="cd-form">
            <p class="fieldset">
              <label class="image-replace cd-email" for="reset-email">Email
              </label>
              <input class="full-width has-padding has-border" id="reset-email" type="email" placeholder="E-mail">
              <span class="cd-error-message">Email không được bỏ trống!
              </span>
            </p>
            <p class="fieldset">
              <input class="full-width has-padding" type="submit" value="Reset password">
            </p>
          </form>
          <p class="cd-form-bottom-message">
            <a href="#0">Quay lại đăng nhập
            </a>
          </p>
        </div> 
        <!-- cd-reset-password -->
        <a href="#0" class="cd-close-form">Close
        </a>
      </div> 
      <!-- cd-user-modal-container -->
    </div> 
    <!-- cd-user-modal -->
  </body>
</html>

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<!DOCTYPE html>

<html>

<head>

<title>Untitled Document

</title>

* {

margin: 0;

padding: 0;

border: 0;

font-size: 100%;

font: inherit;

vertical-align: baseline;

}

/* HTML5 display-role reset for older browsers */

article,

aside,

details,

figcaption,

figure,

footer,

header,

hgroup,

menu,

nav,

section {

display: block;

}

body {

line-height: 1;

}

ol,

ul {

list-style: none;

}

blockquote,

q {

quotes: none;

}

blockquote:before,

blockquote:after,

q:before,

q:after {

content: "";

content: none;

}

table {

border-collapse: collapse;

border-spacing: 0;

}

/* --------------------------------

Primary style

-------------------------------- */

html * {

-webkit-font-smoothing: antialiased;

-moz-osx-font-smoothing: grayscale;

}

*:after,

*:before {

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

box-sizing: border-box;

}

body {

font-size: 100%;

font-family: "PT Sans", sans-serif;

color: #505260;

background-color: #454751;

}

a {

color: #2f889a;

text-decoration: none;

}

img {

max-width: 100%;

}

input,

textarea {

font-family: "PT Sans", sans-serif;

font-size: 16px;

font-size: 1rem;

}

input::-ms-clear,

textarea::-ms-clear {

display: none;

}

/* --------------------------------

xcody-info

-------------------------------- */

#cody-info {

position: relative;

background: #fff;

height: 44px;

box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1);

}

#cody-info .cody-info-logo {

position: absolute;

left: 50%;

top: 50%;

margin-left: -15px;

margin-top: -13px;

}

#cody-info .cody-info-logo svg {

display: block;

-webkit-transition: opacity, 0.2s;

-moz-transition: opacity, 0.2s;

transition: opacity, 0.2s;

}

#cody-info .cody-info-logo svg:hover {

opacity: 0.9;

}

#cody-info .cody-info-logo .cody-info-logo-svg {

fill: #343642;

}

#cody-info li {

position: absolute;

top: 0;

}

#cody-info li:first-child {

left: 0;

}

#cody-info li:last-child {

right: 0;

}

#cody-info li a {

display: block;

width: 44px;

height: 44px;

position: relative;

-webkit-transition: background 0.2s;

-moz-transition: background 0.2s;

transition: background 0.2s;

}

#cody-info li a:hover {

background-color: #29889b;

}

#cody-info li a:hover .cody-info-buttons-svg {

fill: #fff;

}

#cody-info li svg {

display: block;

position: absolute;

top: 50%;

left: 50%;

margin-top: -16px;

margin-left: -16px;

}

#cody-info li .cody-info-buttons-svg {

fill: #29889b;

}

#cody-info.cody-info-bottom {

width: 100%;

position: fixed;

bottom: 0;

left: 0;

z-index: 1;

box-shadow: 0 -1px 1px rgba(0, 0, 0, 0.1);

}

#cody-info::after {

content: "";

display: table;

clear: both;

}

@media only screen and (min-width: 600px) {

#cody-info {

height: 60px;

}

#cody-info li a {

height: 60px;

width: 60px;

}

/* --------------------------------

Main components

-------------------------------- */

header[role="banner"] {

position: relative;

height: 50px;

background: #343642;

}

header[role="banner"] #cd-logo {

float: left;

margin: 4px 0 0 5%;

/* reduce logo size on mobile and make sure it is left aligned with the transform-origin property */

-webkit-transform-origin: 0 50%;

-moz-transform-origin: 0 50%;

-ms-transform-origin: 0 50%;

-o-transform-origin: 0 50%;

transform-origin: 0 50%;

-webkit-transform: scale(0.8);

-moz-transform: scale(0.8);

-ms-transform: scale(0.8);

-o-transform: scale(0.8);

transform: scale(0.8);

}

header[role="banner"] #cd-logo img {

display: block;

}

header[role="banner"]::after {

/* clearfix */

content: "";

display: table;

clear: both;

}

@media only screen and (min-width: 768px) {

header[role="banner"] {

height: 80px;

}

header[role="banner"] #cd-logo {

margin: 20px 0 0 5%;

-webkit-transform: scale(1);

-moz-transform: scale(1);

-ms-transform: scale(1);

-o-transform: scale(1);

transform: scale(1);

}

.main-nav {

float: right;

margin-right: 5%;

width: 44px;

height: 100%;

background: url("../img/cd-icon-menu.svg") no-repeat center center;

cursor: pointer;

}

.main-nav ul {

position: absolute;

top: 0;

left: 0;

width: 100%;

-webkit-transform: translateY(-100%);

-moz-transform: translateY(-100%);

-ms-transform: translateY(-100%);

-o-transform: translateY(-100%);

transform: translateY(-100%);

}

.main-nav ul.is-visible {

-webkit-transform: translateY(50px);

-moz-transform: translateY(50px);

-ms-transform: translateY(50px);

-o-transform: translateY(50px);

transform: translateY(50px);

}

.main-nav a {

display: block;

height: 50px;

line-height: 50px;

padding-left: 5%;

background: #292a34;

border-top: 1px solid #3b3d4b;

color: #fff;

}

@media only screen and (min-width: 768px) {

.main-nav {

width: auto;

height: auto;

background: none;

cursor: auto;

}

.main-nav ul {

position: static;

width: auto;

-webkit-transform: translateY(0);

-moz-transform: translateY(0);

-ms-transform: translateY(0);

-o-transform: translateY(0);

transform: translateY(0);

line-height: 80px;

}

.main-nav ul.is-visible {

-webkit-transform: translateY(0);

-moz-transform: translateY(0);

-ms-transform: translateY(0);

-o-transform: translateY(0);

transform: translateY(0);

}

.main-nav li {

display: inline-block;

margin-left: 1em;

}

.main-nav li:nth-last-child(2) {

margin-left: 2em;

}

.main-nav a {

display: inline-block;

height: auto;

line-height: normal;

background: transparent;

}

.main-nav a.cd-signin,

.main-nav a.cd-signup {

padding: 0.6em 1em;

border: 1px solid rgba(255, 255, 255, 0.6);

border-radius: 50em;

}

.main-nav a.cd-signup {

background: #2f889a;

border: none;

}

/* --------------------------------

xsigin/signup popup

-------------------------------- */

.cd-user-modal {

position: fixed;

top: 0;

left: 0;

width: 100%;

height: 100%;

background: rgba(52, 54, 66, 0.9);

z-index: 3;

overflow-y: auto;

cursor: pointer;

visibility: hidden;

opacity: 0;

-webkit-transition: opacity 0.3s 0, visibility 0 0.3s;

-moz-transition: opacity 0.3s 0, visibility 0 0.3s;

transition: opacity 0.3s 0, visibility 0 0.3s;

}

.cd-user-modal.is-visible {

visibility: visible;

opacity: 1;

-webkit-transition: opacity 0.3s 0, visibility 0 0;

-moz-transition: opacity 0.3s 0, visibility 0 0;

transition: opacity 0.3s 0, visibility 0 0;

}

.cd-user-modal.is-visible .cd-user-modal-container {

-webkit-transform: translateY(0);

-moz-transform: translateY(0);

-ms-transform: translateY(0);

-o-transform: translateY(0);

transform: translateY(0);

}

.cd-user-modal-container {

position: relative;

width: 90%;

max-width: 600px;

background: #fff;

margin: 3em auto 4em;

cursor: auto;

border-radius: 0.25em;

-webkit-transform: translateY(-30px);

-moz-transform: translateY(-30px);

-ms-transform: translateY(-30px);

-o-transform: translateY(-30px);

transform: translateY(-30px);

-webkit-transition-property: -webkit-transform;

-moz-transition-property: -moz-transform;

transition-property: transform;

-webkit-transition-duration: 0.3s;

-moz-transition-duration: 0.3s;

transition-duration: 0.3s;

}

.cd-user-modal-container .cd-switcher:after {

content: "";

display: table;

clear: both;

}

.cd-user-modal-container .cd-switcher li {

width: 50%;

float: left;

text-align: center;

}

.cd-user-modal-container .cd-switcher li:first-child a {

border-radius: 0.25em 0 0 0;

}

.cd-user-modal-container .cd-switcher li:last-child a {

border-radius: 0 0.25em 0 0;

}

.cd-user-modal-container .cd-switcher a {

display: block;

width: 100%;

height: 50px;

line-height: 50px;

background: #d2d8d8;

color: #809191;

}

.cd-user-modal-container .cd-switcher a.selected {

background: #fff;

color: #505260;

}

@media only screen and (min-width: 600px) {

.cd-user-modal-container {

margin: 4em auto;

}

.cd-user-modal-container .cd-switcher a {

height: 70px;

line-height: 70px;

}

.cd-form {

padding: 1.4em;

}

.cd-form .fieldset {

position: relative;

margin: 1.4em 0;

}

.cd-form .fieldset:first-child {

margin-top: 0;

}

.cd-form .fieldset:last-child {

margin-bottom: 0;

}

.cd-form label {

font-size: 14px;

font-size: 0.875rem;

}

.cd-form label.image-replace {

/* replace text with an icon */

display: inline-block;

position: absolute;

left: 15px;

top: 50%;

bottom: auto;

-webkit-transform: translateY(-50%);

-moz-transform: translateY(-50%);

-ms-transform: translateY(-50%);

-o-transform: translateY(-50%);

transform: translateY(-50%);

height: 20px;

width: 20px;

overflow: hidden;

text-indent: 100%;

white-space: nowrap;

color: transparent;

text-shadow: none;

background-repeat: no-repeat;

background-position: 50% 0;

}

.cd-form label.cd-username {

}

.cd-form label.cd-email {

}

.cd-form label.cd-password {

}

.cd-form input {

margin: 0;

padding: 0;

border-radius: 0.25em;

}

.cd-form input.full-width {

width: 100%;

}

.cd-form input.has-padding {

padding: 12px 20px 12px 50px;

}

.cd-form input.has-border {

border: 1px solid #d2d8d8;

-webkit-appearance: none;

-moz-appearance: none;

-ms-appearance: none;

-o-appearance: none;

appearance: none;

}

.cd-form input.has-border:focus {

border-color: #343642;

box-shadow: 0 0 5px rgba(52, 54, 66, 0.1);

outline: none;

}

.cd-form input.has-error {

border: 1px solid #d76666;

}

.cd-form input[type="password"] {

/* space left for the HIDE button */

padding-right: 65px;

}

.cd-form input[type="submit"] {

padding: 16px 0;

cursor: pointer;

background: #2f889a;

color: #fff;

font-weight: bold;

border: none;

-webkit-appearance: none;

-moz-appearance: none;

-ms-appearance: none;

-o-appearance: none;

appearance: none;

}

.no-touch .cd-form input[type="submit"]:hover,

.no-touch .cd-form input[type="submit"]:focus {

background: #3599ae;

outline: none;

}

.cd-form .hide-password {

display: inline-block;

position: absolute;

right: 0;

top: 0;

padding: 6px 15px;

border-left: 1px solid #d2d8d8;

top: 50%;

bottom: auto;

-webkit-transform: translateY(-50%);

-moz-transform: translateY(-50%);

-ms-transform: translateY(-50%);

-o-transform: translateY(-50%);

transform: translateY(-50%);

font-size: 14px;

font-size: 0.875rem;

color: #343642;

}

.cd-form .cd-error-message {

display: inline-block;

position: absolute;

left: -5px;

bottom: -35px;

background: rgba(215, 102, 102, 0.9);

padding: 0.8em;

z-index: 2;

color: #fff;

font-size: 13px;

font-size: 0.8125rem;

border-radius: 0.25em;

/* prevent click and touch events */

pointer-events: none;

visibility: hidden;

opacity: 0;

-webkit-transition: opacity 0.2s 0, visibility 0 0.2s;

-moz-transition: opacity 0.2s 0, visibility 0 0.2s;

transition: opacity 0.2s 0, visibility 0 0.2s;

}

.cd-form .cd-error-message::after {

/* triangle */

content: "";

position: absolute;

left: 22px;

bottom: 100%;

height: 0;

width: 0;

border-left: 8px solid transparent;

border-right: 8px solid transparent;

border-bottom: 8px solid rgba(215, 102, 102, 0.9);

}

.cd-form .cd-error-message.is-visible {

opacity: 1;

visibility: visible;

-webkit-transition: opacity 0.2s 0, visibility 0 0;

-moz-transition: opacity 0.2s 0, visibility 0 0;

transition: opacity 0.2s 0, visibility 0 0;

}

@media only screen and (min-width: 600px) {

.cd-form {

padding: 2em;

}

.cd-form .fieldset {

margin: 2em 0;

}

.cd-form .fieldset:first-child {

margin-top: 0;

}

.cd-form .fieldset:last-child {

margin-bottom: 0;

}

.cd-form input.has-padding {

padding: 16px 20px 16px 50px;

}

.cd-form input[type="submit"] {

padding: 16px 0;

}

.cd-form-message {

padding: 1.4em 1.4em 0;

font-size: 14px;

font-size: 0.875rem;

line-height: 1.4;

text-align: center;

}

@media only screen and (min-width: 600px) {

.cd-form-message {

padding: 2em 2em 0;

}

.cd-form-bottom-message {

position: absolute;

width: 100%;

left: 0;

bottom: -30px;

text-align: center;

font-size: 14px;

font-size: 0.875rem;

}

.cd-form-bottom-message a {

color: #fff;

text-decoration: underline;

}

.cd-close-form {

/* form X button on top right */

display: block;

position: absolute;

width: 40px;

height: 40px;

right: 0;

top: -40px;

background: url("../img/cd-icon-close.svg") no-repeat center center;

text-indent: 100%;

white-space: nowrap;

overflow: hidden;

}

@media only screen and (min-width: 1170px) {

.cd-close-form {

display: none;

}

#cd-login,

#cd-signup,

#cd-reset-password {

display: none;

}

#cd-login.is-selected,

#cd-signup.is-selected,

#cd-reset-password.is-selected {

display: block;

}

</style>

</script>

</script>

jQuery(document).ready(function($){

var $form_modal = $('.cd-user-modal'),

$form_login = $form_modal.find('#cd-login'),

$form_signup = $form_modal.find('#cd-signup'),

$form_forgot_password = $form_modal.find('#cd-reset-password'),

$form_modal_tab = $('.cd-switcher'),

$tab_login = $form_modal_tab.children('li').eq(0).children('a'),

$tab_signup = $form_modal_tab.children('li').eq(1).children('a'),

$forgot_password_link = $form_login.find('.cd-form-bottom-message a'),

$back_to_login_link = $form_forgot_password.find('.cd-form-bottom-message a'),

$main_nav = $('.main-nav');

//open modal

$main_nav.on('click', function(event){

if( $(event.target).is($main_nav) ) {

// on mobile open the submenu

$(this).children('ul').toggleClass('is-visible');

}

else {

// on mobile close submenu

$main_nav.children('ul').removeClass('is-visible');

//show modal layer

$form_modal.addClass('is-visible');

//show the selected form

( $(event.target).is('.cd-signup') ) ? signup_selected() : login_selected();

}

);

//close modal

$('.cd-user-modal').on('click', function(event){

if( $(event.target).is($form_modal) || $(event.target).is('.cd-close-form') ) {

$form_modal.removeClass('is-visible');

}

);

//close modal when clicking the esc keyboard button

$(document).keyup(function(event){

if(event.which=='27'){

$form_modal.removeClass('is-visible');

}

);

//switch from a tab to another

$form_modal_tab.on('click', function(event) {

event.preventDefault();

( $(event.target).is( $tab_login ) ) ? login_selected() : signup_selected();

}

);

//hide or show password

$('.hide-password').on('click', function(){

var $this= $(this),

$password_field = $this.prev('input');

( 'password' == $password_field.attr('type') ) ? $password_field.attr('type', 'text') : $password_field.attr('type', 'password');

( 'Hide' == $this.text() ) ? $this.text('Show') : $this.text('Hide');

//focus and move cursor to the end of input field

$password_field.putCursorAtEnd();

}

);

//show forgot-password form

$forgot_password_link.on('click', function(event){

event.preventDefault();

forgot_password_selected();

}

);

//back to login from the forgot-password form

$back_to_login_link.on('click', function(event){

event.preventDefault();

login_selected();

}

);

function login_selected(){

$form_login.addClass('is-selected');

$form_signup.removeClass('is-selected');

$form_forgot_password.removeClass('is-selected');

$tab_login.addClass('selected');

$tab_signup.removeClass('selected');

}

function signup_selected(){

$form_login.removeClass('is-selected');

$form_signup.addClass('is-selected');

$form_forgot_password.removeClass('is-selected');

$tab_login.removeClass('selected');

$tab_signup.addClass('selected');

}

function forgot_password_selected(){

$form_login.removeClass('is-selected');

$form_signup.removeClass('is-selected');

$form_forgot_password.addClass('is-selected');

}

//Kiểm tra form hợp lệ

$form_login.find('input[type="submit"]').on('click', function(event){

event.preventDefault();

if ($('#signin-email').val() == ''){

$form_login.find('input[type="email"]').toggleClass('has-error').next('span').toggleClass('is-visible');

}

);

//IE9 placeholder fallback

//credits http://www.hagenburger.net/BLOG/HTML5-Input-Placeholder-Fix-With-jQuery.html

if(!Modernizr.input.placeholder){

$('[placeholder]').focus(function() {

var input = $(this);

if (input.val() == input.attr('placeholder')) {

input.val('');

}

).blur(function() {

var input = $(this);

if (input.val() == '' || input.val() == input.attr('placeholder')) {

input.val(input.attr('placeholder'));

}

).blur();

$('[placeholder]').parents('form').submit(function() {

$(this).find('[placeholder]').each(function() {

var input = $(this);

if (input.val() == input.attr('placeholder')) {

input.val('');

}

)

}

);

}

);

//credits https://css-tricks.com/snippets/jquery/move-cursor-to-end-of-textarea-or-input/

jQuery.fn.putCursorAtEnd = function() {

return this.each(function() {

// If this function exists...

if (this.setSelectionRange) {

// ... then use it (Doesn't work in IE)

// Double the length because Opera is inconsistent about whether a carriage return is one character or two. Sigh.

var len = $(this).val().length * 2;

this.setSelectionRange(len, len);

}

else {

// ... otherwise replace the contents with itself

// (Doesn't work in Google Chrome)

$(this).val($(this).val());

}

);

};

jQuery('#cody-info ul li').eq(1).on('click', function(){

$('#cody-info').hide();

}

);

</script>

</head>

<body>

</a>

</div>

<ul>

<li>

<a class="cd-signin" href="#0">Đăng nhập

</a>

</li>

<li>

<a class="cd-signup" href="#0">Đăng ký

</a>

</li>

</ul>

</nav>

</header>

<li>

<a href="#0">Đăng nhập

</a>

</li>

<li>

<a href="#0">Tạo tài khoản

</a>

</li>

</ul>

<label class="image-replace cd-email" for="signin-email">Email

</label>

<span class="cd-error-message">Email không được bỏ trống!

</span>

</p>

<label class="image-replace cd-password" for="signin-password">Password

</label>

<a href="#0" class="hide-password">Hide

</a>

<span class="cd-error-message">Password không được bỏ trống!

</span>

</p>

<label for="remember-me">Nhớ đăng nhập

</label>

</p>

</p>

</form>

<a href="#0">Quên mật khẩu?

</a>

</p>

</div>

<label class="image-replace cd-username" for="signup-username">Username

</label>

<span class="cd-error-message">Username không được bỏ trống!

</span>

</p>

<label class="image-replace cd-email" for="signup-email">Email

</label>

<span class="cd-error-message">Email không được bỏ trống!

</span>

</p>

<label class="image-replace cd-password" for="signup-password">Password

</label>

<a href="#0" class="hide-password">Hide

</a>

<span class="cd-error-message">Password không được bỏ trống!

</span>

</p>

<label for="accept-terms">Tôi đồng ý với

<a href="#0">Điều khoản & Chính sách

</a>

</label>

</p>

</p>

</form>

</div>

<p class="cd-form-message">Bạn quên mật khẩu? Vui lòng nhập email của bạn và chúng tôi sẽ gửi cho bạn một email có đường dẫn để thay đổi mật khẩu.

</p>

<label class="image-replace cd-email" for="reset-email">Email

</label>

<span class="cd-error-message">Email không được bỏ trống!

</span>

</p>

</p>

</form>

<a href="#0">Quay lại đăng nhập

</a>

</p>

</div>

<a href="#0" class="cd-close-form">Close

</a>

</div>

</div>

</body>

</html>

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Code HTML

Code CSS

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