前端练习（4）- 输入动画

By ikouaneHtml, 前端练习

开发工具: Codepen.io

index.html

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
    <style media="screen">
*{
  margin: 0;
  padding: 0;
  outline: none;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body{
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(-135deg,#c850c0,#4158d0);
}
.wrapper{
  width: 450px;
  background: #fff;
  padding: 30px;
  box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
}
.wrapper .input-data{
  height: 40px;
  width: 100%;
  position: relative;
}
.wrapper .input-data input{
  height: 100%;
  width: 100%;
  border: none;
  border-bottom: 2px solid silver;
}
.input-data input:focus ~ label,
.input-data input:valid ~ label{
  transform: translatey(-20px);
  font-size: 15px;
  color: #4158d0;
}
.wrapper .input-data label{
  position: absolute;
  bottom: 10px;
  left: 0px;
  color: grey;
  pointer-events: none;
  transition: all 0.3s ease;
}
.wrapper .input-data .underline{
  position: absolute;
  bottom: 0px;
  height: 2px;
  width: 100%; 
}
.input-data .underline:before{
  position: absolute;
  content: "";
  height: 100%;
  width: 100%;
  background: #4158d0;
  transform: scalex(0);
  transition: transform 0.3s ease;
}
.input-data input:focus ~ .underline:before,
.input-data input:valid ~ .underline:before{
  transform: scalex(1);
}
    </style>
  </head>
  <body>
  <div class="wrapper">
  <div class="input-data">
    <input type="text" required>
    <div class="underline"></div>
    <label>Name</label>
  </div>
</div>
  </body>
</html>
教程来自:CodingNepal(Youtube).
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