关于css:清除浮动之after伪元素法

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<!DOCTYPE html>
<html lang=”en”>
<head>

<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title> 革除浮动之 after 伪元素法 </title>
<style>
  .box {
    width: 800px;
    border: 1px solid blue;
    margin: 0 auto;
    background-color: gray;
  }
  /* 革除浮动 */
  .clearfix:after {
    content: "";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
  }
  .clearfix {*zoom: 1;}

  .damao {
    width: 300px;
    height: 200px;
    background-color: purple;
    float: left;
  }
  .ermao {
    width: 200px;
    height: 200px;
    background-color: pink;
    float: left;
  }

  .footer {
    height: 200px;
    background-color: black;
  }
</style>

</head>
<body>

<div class="box clearfix">
  <div class="damao"> 大毛 </div>
  <div class="ermao"> 二毛 </div>
  <div class="ermao"> 二毛 </div>
  <div class="ermao"> 二毛 </div>
  <div class="ermao"> 二毛 </div>
  <div class="ermao"> 二毛 </div>
</div>
<div class="footer"></div>

</body>
</html>

正文完