两边固定中间自适应

    1. <!DOCTYPE html>
    2. <html lang="en">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <meta http-equiv="X-UA-Compatible" content="IE=edge">
    6.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
    7.     <title>Document</title>
    8.     <style>
    9.         *{
    10.             margin: 0;
    11.             padding: 0;
    13.         }
    14.         .outer{
    15.             min-width: 1000px;
    16.             overflow: hidden;
    17.         }
    18.         .main{
    19.             width: 100%;
    20.             height: 500px;
    21.             background-color: yellowgreen;
    22.             float: left;
    23.         }
    24.         .left{
    25.             width: 200px;
    26.             height: 500px;
    27.             background-color: yellow;
    28.             float: left;
    29.             margin-left: -100%;
    31.         }
    32.         .right{
    33.             width: 200px;
    34.             height: 500px;
    35.             background-color: orange;
    36.             float: left;
    37.             margin-left: -200px;
    38.         }
    39.         .inner{
    40.             padding: 0 200px;
    41.         }
    42.     </style>
    43. </head>
    44. <body>
    45.     <div class="outer">
    46.         <div class="main">
    47.             <div class="inner">中间</div>
    48.         </div>
    49.         <div class="left">左边</div>
    50.         <div class="right">右边</div>
    51.     </div>
    52. </body>
    53. </html>