<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>实现三个div,固定左右两边的div宽为200,中间的div宽度自适应的四种方法</title> <style type="text/css"> html, body { width: 100%; height: 100%; margin: 0; padding: 0; color: #fff; text-align: center; line-height: 100px; } .clear:after { content: ""; display: block; height: 0; clear: both; } /*float法*/ .left { float: left; width: 200px; height: 100px; background: Red; } .right { float: right; width: 200px; height: 100px; background: green; } .center { margin-left: 200px; margin-right: 20px; height: 100px; background: blue; } /*position*/ .position { position: relative; margin-bottom: 100px; } .left2 { position: absolute; left: 0; top: 0; width: 200px; height: 100px; background: Red; } .right2 { position: absolute; right: 0; top: 0; width: 200px; height: 100px; background: green; } .center2 { position: absolute; left: 200px; right: 200px; top: 0; background: blue; } /*table*/ .table { display: table; width: 100%; } .table .child { display: table-cell; } .left3 { width: 200px; height: 100px; background: Red; } .right3 { width: 200px; height: 100px; background: green; } .center3 { height: 100px; background: blue; } /*flex*/ .flex { display: box; display: -webkit-box; display: -moz-box; } .left4 { width: 200px; height: 100px; background: Red; } .right4 { width: 200px; height: 100px; background: green; } .center4 { box-flex: 1; -webkit-box-flex: 1; -moz-box-flex: 1; background: blue; } </style> </head> <body> <div class="clear"> <div class="left">float法</div> <div class="right">float法</div> <div class="center">float法</div> </div> <br /> <div class="position clear"> <div class="left2">position法</div> <div class="right2">position法</div> <div class="center2">position法</div> </div> <br /> <div class="table clear"> <div class="left3 child">table法</div> <div class="center3 child">table法</div> <div class="right3 child">table法</div> </div> <br /> <div class="flex clear"> <div class="left4 child">flex法</div> <div class="center4 child">flex法</div> <div class="right4 child">flex法</div> </div> </body> </html>
效果图