用css3将input框写出类似Google登录页面的动画效果

效果一

代码如下

CSS

body{ background-color:#acacac; } .form-container{ display: block; position: relative; width: 400px; height: 400px; background: #fff; margin: 50px auto; padding: 30px; } input{ display: block; position: relative; background: none; border: 2px solid #acacac; border-radius:5px; width: 100%; font-weight: bold; padding-left:10px; font-size: 16px; height:35px; z-index: 1; } label{ display: inline-block; position: relative; top: -32px; left: 10px; color: #acacac; font-size: 16px; z-index: 2; transition: all 0.2s ease-out; } input:focus, input:valid{ outline: none; border: 2px solid #00aced; } input:focus + label, input:valid + label{ top: -50px; font-size: 16px; color: #00aced; background-color:#fff; }

HTML

<div class="main"> <div class="form-container"> <input type="text" name="input1" required> <label for="input1">Account</label> <input type="text" name="input2" required> <label for="input2">Password</label> </div> </div>

效果二

代码如下：

CSS

body{ background-color:#acacac; } .form-container{ display: block; position: relative; width: 400px; background: #fff; margin: 50px auto; padding: 60px; } input{ display: block; position: relative; background: none; border: none; border-bottom: 1px solid #ddd; width: 100%; font-weight: bold; font-size: 16px; z-index: 2; } label{ display: block; position: relative; top: -20px; left: 0px; color: #999; font-size: 16px; z-index: 1; transition: all 0.3s ease-out; margin-bottom:40px; } input:focus, input:valid{ outline: none; border-bottom: 1px solid #00aced; } input:focus + label, input:valid + label{ top: -50px; font-size: 16px; color: #00aced; background-color:#fff; }

HTML

<div class="main"> <div class="form-container"> <input type="text" name="input1" required> <label for="input1">Account</label> <input type="text" name="input2" required> <label for="input2">Password</label> </div> </div>

总结

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