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【代码片段】三列布局

2015-07-14 21:35 357 查看

<!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>三列布局</title> //自适应
<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>
</html>

</pre><pre name="code" class="html"><!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>三列布局</title>  //左右固定
<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}  //不能用浮动float，用absolute固定位置
.main{ height:600px; margin:0 240px; background:#9CF}   //margin定义右边240px，若左右均定义则为margin:0 240px 0 240px,若要增加空隙，则<span style="font-family: Arial, Helvetica, sans-serif;">margin:0 250px 0 250px，增大空隙</span>
.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>

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标签： 三列布局 css

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