<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>三列布局_左右绝对定位_中间适应</title>
<style type="text/css">
.container{
position: absolute;
left: 0;
right: 0;
}
.left{
top: 0;
left: 0;
position: absolute;
200px;
height: 600px;
background-color: aqua;
}
.right{
top: 0;
right: 0;
position: absolute;
200px;
height: 600px;
background-color: yellowgreen;
}
.main{
margin-left: 200px;
margin-right: 200px;
height: 600px;
background-color: papayawhip;
}
</style>
</head>
<body>
<h2>基本思路</h2>
<ol>
<li>左右2列采用绝对定位来布局</li>
<li>中间内容部分采用margin挤压出来</li>
</ol>
<!-- DOM -->
<div class="container">
<div class="left">左侧</div>
<div class="right">右侧</div>
<div class="main">主体</div>
</div>
</body>
</html>