<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>三列布局</title>
<style>
body{ margin:0; padding:0; font-size:30px; font-weight:bold}
div{ text-align:center; line-height:50px}
.left{ width:240px; height:600px; background:#ccc; position:absolute; left:0; top:0}
.main{ height:600px; margin:0 240px; background:#9CF}
.right{ height:600px; width:240px; position:absolute; top:0; right:0; background:#FCC;}
</style>
</head>
<body>
<div class="left">left</div>
<div class="main">main</div>
<div class="right">right</div>
</body>
</html>
DEMO：http://Lovejulyer.github.io/Source_Code/Blog_demo/Codes2/sanliezuoyouguding.html
五、混合布局及结构与表现原则
混合布局01
XML/HTML Code复制内容到剪贴板
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>混合布局01</title>
<style>
body{ margin:0; padding:0; font-size:30px; font-weight:bold}
div{ text-align:center; line-height:50px}
.head{ height:100px;background:#9CF}
.left{ width:20%; height:600px; background:#ccc; float:left}
.right{ width:80%; height:600px;background:#FCC; float:right}/*宽度设置为百分数，以实现自适应*/
</style>
</head>
<body>
<div class="head">head</div>
<div class="left">left</div>
<div class="right">right</div>
