一列布局
<head>
<style>
body{ margin:0; padding:0; font-size:30px; font-weight:bold}
div{ text-align:center; line-height:50px}
.head, .main, .footer{width:80%;margin:0 auto}
.head{ height:100px; background:#ccc}
.main{ height:600px; background:#FCC}
.footer{ height:50px; background:#9CF}
</style>
</head>
<body>
<div class="head">head</div>
<div class="main">main</div>
<div class="footer">footer</div>
</body>
两列布局
<head>
<style>
body{ margin:0; padding:0; font-size:30px; font-weight:bold}
div{ text-align:center; line-height:50px}
.main{ width:80%; height:600px; margin:0 auto}
.left{ width:20%; height:600px; background:#ccc; float:left}
.right{ width:80%; height:600px; background:#FCC; float:right}
</style>
</head>
<body>
<div class="main">
<div class="left">left</div>
<div class="right">right</div>
</div>
</body>
三列布局
<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:20%; height:600px; background:#ccc; position:absolute; left:0; top:0}
.main{ height:600px; margin:0 20%; background:#9CF}
.right{ height:600px; width:20%; 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>
混合布局
<head>
<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}
.main{margin:0 10%;height:600px; background:#9CC }
.right{ width:20%; height:600px;background:#FCC; float:right}
.footer{ height:50px; background:#9F9; clear:both}
</style>
</head>
<body>
<div class="head">head</div>
<div class="left">left</div>
<div class="right">right</div>
<div class="main">main</div>
<div class="footer">footer</div>
</body>
