Form đăng nhập cho Blogspot với hiệu ứng CSS3 và Jquery

Cách tiến hành:

•  Đăng nhập vào Blog
• Vào Mẫu >> Chỉnh sửa HTML >> Chèn code sau vào trước ]]></b:skin>

Ceewave ul {
  margin: 0;
  padding: 0;
  list-style: none;
  position: relative;
  float: right;
  background: #eee;
  border-bottom: 1px solid #fff;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  border-radius: 3px;    
}

Ceewave li {
  float: left;          
}

Ceewave #login {
  border-right: 1px solid #ddd;
  -moz-box-shadow: 1px 0 0 #fff;
  -webkit-box-shadow: 1px 0 0 #fff;
  box-shadow: 1px 0 0 #fff;  
}

Ceewave #login-trigger,
Ceewave #signup a {
  display: inline-block;
  *display: inline;
  *zoom: 1;
  height: 25px;
  line-height: 25px;
  font-weight: bold;
  padding: 0 8px;
  text-decoration: none;
  color: #444;
  text-shadow: 0 1px 0 #12dbe5; 
}

Ceewave #signup a {
  -moz-border-radius: 0 3px 3px 0;
  -webkit-border-radius: 0 3px 3px 0;
  border-radius: 0 3px 3px 0;
}

Ceewave #login-trigger {
  -moz-border-radius: 3px 0 0 3px;
  -webkit-border-radius: 3px 0 0 3px;
  border-radius: 3px 0 0 3px;
}

Ceewave #login-trigger:hover,
Ceewave #login .active,
Ceewave #signup a:hover {
  background: #fff;
}

Ceewave #login-content {
  display: none;
  position: absolute;
  top: 24px;
  right: 0;
  z-index: 999;    
  background: #fff;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#fff), to(#eee));
  background-image: -webkit-linear-gradient(top, #fff, #eee);
  background-image: -moz-linear-gradient(top, #fff, #eee);
  background-image: -ms-linear-gradient(top, #fff, #eee);
  background-image: -o-linear-gradient(top, #fff, #eee);
  background-image: linear-gradient(top, #fff, #eee);  
  padding: 15px;
  -moz-box-shadow: 0 2px 2px -1px rgba(0,0,0,.9);
  -webkit-box-shadow: 0 2px 2px -1px rgba(0,0,0,.9);
  box-shadow: 0 2px 2px -1px rgba(0,0,0,.9);
  -moz-border-radius: 3px 0 3px 3px;
  -webkit-border-radius: 3px 0 3px 3px;
  border-radius: 3px 0 3px 3px;
}

Ceewave li #login-content {
  right: 0;
  width: 250px;  
}

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

#inputs input {
  background: #f1f1f1;
  padding: 6px 5px;
  margin: 0 0 5px 0;
  width: 238px;
  border: 1px solid #ccc;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  border-radius: 3px;
  -moz-box-shadow: 0 1px 1px #ccc inset;
  -webkit-box-shadow: 0 1px 1px #ccc inset;
  box-shadow: 0 1px 1px #ccc inset;
}

#inputs input:focus {
  background-color: #fff;
  border-color: #e8c291;
  outline: none;
  -moz-box-shadow: 0 0 0 1px #e8c291 inset;
  -webkit-box-shadow: 0 0 0 1px #e8c291 inset;
  box-shadow: 0 0 0 1px #e8c291 inset;
}

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

#login #actions {
  margin: 10px 0 0 0;
}

#login #submit {  
  background-color: ##4545d0;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#45d0d0), to(#4545d0));
  background-image: -webkit-linear-gradient(top, #45d0d0, #4545d0);
  background-image: -moz-linear-gradient(top, #45d0d0, #4545d0);
  background-image: -ms-linear-gradient(top, #45d0d0, #4545d0);
  background-image: -o-linear-gradient(top, #45d0d0, #4545d0);
  background-image: linear-gradient(top, #45d0d0, #4545d0);
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  border-radius: 3px;
  text-shadow: 0 1px 0 rgba(0,0,0,.5);
  -moz-box-shadow: 0 0 1px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.3) inset;
  -webkit-box-shadow: 0 0 1px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.3) inset;
  box-shadow: 0 0 1px rgba(0, 0, 0, 0.3), 0 1px 0 rgba(255, 255, 255, 0.3) inset;    
  border: 1px solid #7e1515;
  float: left;
  height: 30px;
  padding: 0;
  width: 100px;
  cursor: pointer;
  font: bold 14px Arial, Helvetica;
  color: #fff;
}

#login #submit:hover,
#login #submit:focus {  
  background-color: #e97171;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#d14545), to(#e97171));
  background-image: -webkit-linear-gradient(top, #d14545, #e97171);
  background-image: -moz-linear-gradient(top, #d14545, #e97171);
  background-image: -ms-linear-gradient(top, #d14545, #e97171);
  background-image: -o-linear-gradient(top, #d14545, #e97171);
  background-image: linear-gradient(top, #d14545, #e97171);
} 

#login #submit:active {  
  outline: none;
  -moz-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5) inset;
  -webkit-box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5) inset;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5) inset;  
}

#login #submit::-moz-focus-inner {
  border: none;
}

#login label {
  float: right;
  line-height: 30px;
}

#login label input {
  position: relative;
  top: 2px;
  right: 2px;
}

• Tiếp tục chèn code sau vào trước thẻ </head>

$(document).ready(function(){
 $('#login-trigger').click(function(){
  $(this).next('#login-content').slideToggle();
  $(this).toggleClass('active');     
  
  if ($(this).hasClass('active')) $(this).find('span').html('▲')
   else $(this).find('span').html('▼')
  })
});

Code này có tác dụng chính là xoay ngược dấu mũi tên (sẽ xuất hiện ở sau).

•  Lưu mẫu lại
  

• Tạo một Widget HTML tại nơi mà bạn muốn nó xuất hiện và dán code sau vào:

<ceewave>
 <ul>
  <li id="login">
   <a id="login-trigger" href="#">
    Log in <span>▼</span>
   </a>
   <div id="login-content">
    <form action='https://accounts.google.com/ServiceLoginAuth' method='post' novalidate="">
 
    <fieldset id="inputs">
      <input id="username" type="email" name="Email" placeholder="Your email address" required />   
      <input id="password" type="password" name="Password" placeholder="Password" required />
     </fieldset>
     <fieldset id="actions">
      <input type="submit" id="submit" value="Log in" />
      <label><input type="checkbox" checked /> Keep me signed in</label>
     </fieldset>
    </form>
   </div>                     
  </li>
  <li id="signup">
   <a href="https://www.blogger.com/signup.g">Sign up FREE</a>
  </li>
 </ul>
</ceewave>

Lưu lại, thế là xong!