两栏布局，左边固定右边自适应-优快云博客

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <div class="father">
      <div class="left"></div>
      <div class="right"></div>
    </div>
  </body>
  <style lang="css">
    /* 1. float */

    /* .left {
      width: 200px;
      height: 200px;
      float: left;
      background-color: blue;
    }
    .right {
      height: 200px;
      margin-left: 200px;
      background-color: red;
    } */
    
    /* 2.通过绝对定位 */

    .father {
      position: relative;
      height: 200px;
    }
    .left {
      position: absolute;
      float: left;
      width: 200px;
      height: 100%;
      background-color: blue;
    }
    .right {
      position: absolute;
      left: 200px;
      right: 0;
      height: 100%;
      background-color: red;
    }

    /* 3.flex 布局 */

    /* .father {
      height: 200px;
      display: flex;
    }
    .left {
      width: 200px;
      height: 100%;
      background-color: blue;
    }
    .right {
      flex: 1;
      height: 100%;
      background-color: red;
    } */
  </style>
</html>

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本文链接：https://blog.youkuaiyun.com/Jet_Lover/article/details/115646489