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css页面中常见左中右分栏布局的两种实现方式

2013-11-15 16:22 791 查看
以下代码复制粘贴即可使用:
示例一:

<!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 charset="gb2312" /> 
<style type="text/css"> 
.page_center { 
width:100%; 
} 
#nav { 
background-color:red; 
height:20px; 
} 
#left { 
width:120px; 
background-color:green; 
position:absolute; 
} 
#middle { 
background-color:yellow; 
} 
#right { 
width:120px; 
background-color:green; 
position:absolute; 
top:0; 
right:0; 
} 
#foot { 
background-color:pink; 
} 
#main { 
position:relative; 
} 
</style> 
</head> 
<body> 
<div id="nav" class="page_center">上边</div> 
<div id="main" class="page_center"> 
<div id="left">左边</div> 
<div id="middle"> 中间部分</div> 
<div id="right">右边</div> 
</div> 
<div id="foot" class="page_center">底边</div> 
</body> 
</html>

示例2:

<!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>Untitled Document</title> 
</head> 
<style type="text/css"> 
#left{ 
float:left; width:240px; height:500px; background:#0C9; 
} 
#right{ 
float:right;width:240px;height:500px; background:#933; 
} 
#center{ 
height:500px;background:#06C; 
} 
</style> 
<body> 
<div id="left" >左边</div> 
<div id="right" >右边</div> 
<div id="center" style="">中间</div> 
</body> 
</html>


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