<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<!--
1.两边固定，当中自适应
2.当中列要完整显示
3.当中列要优先加载
-->
<style type="text/css">
#middle{
float: left;
/*padding: 0 200px;*/
width: 100%;
height: 300px;
background: red;
}
#left{
position: relative;
left: -200px;
margin-left: -100%;
float: left;
width: 200px;
height: 300px;
background: yellow;
}
#right{
position: relative;
right: -200px;
float: left;
margin-left: -200px;
width:200px;
height: 300px;
background: yellow;
}
#content{
padding: 0 200px;
}
</style>
</head>
<body>
<div id="content">
<div id="middle">丁香一样的芬芳</div>
<div id="left">丁香一样的颜色</div>
<div id="right">丁香一样的忧愁</div>
</div>
</body>
</html>
