CSS实现两栏布局，左边固定，右边自适应的4种方法

1. float+overflow:hidden

这种办法主要通过 overflow 触发 BFC,而 BFC 不会重叠浮动元素。由于设置 overflow:hidden 并不会触发 IE6-浏览器的 haslayout 属性，所以需要设置 zoom:1 来兼容 IE6-浏览器。具体代码如下：

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <meta name="viewport" content="width=device-width, initial-scale=1.0">  <meta http-equiv="X-UA-Compatible" content="ie=edge">  <title>Document</title>  <style>    .parent {      margin: 0 auto; // 使父容器水平居中显示      overflow: hidden;      zoom: 1;      max-width: 1000px;    }    .left {      float: left;      margin-right: 20px;      width: 200px;      background-color: green;    }    .right {      overflow: hidden;      zoom: 1;      background-color: yellow;    }  </style></head><body>  <div class="parent">     <div class="left">     <p>left left left left</p>     </div>     <div class="right">     <p>right</p>     <p>right</p>     </div>   </div> </body></html>

2. float: left+ margin-left

float使左边的元素脱离文档流，右边的元素可以和左边的元素显示在同一行，设置margin-left让右边的元素不覆盖掉左边的元素，代码如下：

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <meta name="viewport" content="width=device-width, initial-scale=1.0">  <meta http-equiv="X-UA-Compatible" content="ie=edge">  <title>Document</title>  <style>    .parent {      margin: 0 auto;      max-width: 1000px;    }    .parent::after {      content: ;      display: table;      clear: both;    }    .left {      float: left;      width: 200px;      background-color: green;    }    .right {      margin-left: 200px;      background-color: yellow;    }  </style></head><body>  <div class="parent">     <div class="left">     <p>left left left left</p>     </div>     <div class="right">     <p>right</p>     <p>right</p>    <p>right</p>     </div>    </div> </body></html>

3. position: absolute + margin-left

左边绝对定位，右边设置margin-left，代码如下：

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <meta name="viewport" content="width=device-width, initial-scale=1.0">  <meta http-equiv="X-UA-Compatible" content="ie=edge">  <title>Document</title>  <style>    .parent {      position: relative;      margin: 0 auto;      max-width: 1000px;    }    .left {      position: absolute;      width: 200px;      background-color: green;    }    .right {      margin-left: 200px;      background-color: yellow;    }  </style></head><body>  <div class="parent">     <div class="left">     <p>left left left left</p>     </div>     <div class="right">     <p>right</p>     <p>right</p>    <p>right</p>     </div>    </div> </body></html>

4. flex布局

flex布局可以使两个子元素显示在同一行，只要左边的宽度固定，就可以实现效果，代码如下：

<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <meta name="viewport" content="width=device-width, initial-scale=1.0">  <meta http-equiv="X-UA-Compatible" content="ie=edge">  <title>Document</title>  <style>    .parent {      display: flex;      margin: 0 auto;      max-width: 1000px;    }    .left {      width: 200px;      background-color: green;    }    .right {      margin-left: 20px;      flex: 1;      background-color: yellow;    }  </style></head><body>  <div class="parent">    <div class="left">      <p>left left left left</p>    </div>    <div class="right">      <p>right</p>      <p>right</p>      <p>right</p>    </div>  </div></body></html>

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CSS实现两栏布局，左边固定，右边自适应的4种方法