div布局的自由伸展三栏式版面的代码_经验交流-css教程-PHP中文网

div布局的自由伸展三栏式版面的代码_经验交流

PHP中文网

发布： 2016-05-16 12:07:04

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "../../../www.w3.org/TR/xhtml1/DTD/strict.dtd">  
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN"> 
<head> 
<title>自由伸展的三栏式版面</title> 
<meta name="Big John" content="August 24, 2002" /> 
<meta http-equiv="content-Type" content="text/html; charset=GB2312" />  
<meta name="mssmarttagspreventparsing" content="true" /> 
<meta name="keywords" content="demo,test,big john,big,john,positioniseverything,css,html,what else do you want from me!?" /> 
<meta name="description" content="A demo of 3 fluid, full height columns, including header and footer, all with different BGs. " /> 
<meta name="distribution" content="global" /> 
<meta name="resource-type" content="document" /> 
<meta name="robots" content="all" /> 
<meta http-equiv="imagetoolbar" content="no" /> 
<meta http-equiv="pragma" content="no-cache" /> 

<style type="text/css"> 
<!-- 

html {margin: 0; padding: 0;} 

body {margin: 0; padding: 0; font-family: "Palatino Linotype", Georgia, "Times New Roman", Times, serif;  
  font-size: small; background: #ee8 repeat-y url(images/browncol.gif);} 
/*** Image is 180px wide, and 20px high ***/ 

pre {margin: 0; font-family: verdana, sans-serif; font-size: .9em;} 

a {color: #000;} 

.alignright {margin-top: 0; text-align: right;} 

.small {font-size: .9em;} 

.return {position: absolute; top: 0; right: 0; text-align: right; padding: .5em;} 

/******************************************************************************* 
                       Positioning rules 
*******************************************************************************/ 
h1, h2 { 
font-size: 22px; 
margin: 0; 
color: #040; 
background-color: #c83;    /*** The header and footer have backgrounds, to cover the 2-tone body BG  ***/ 
border-top: 4px solid #000; 
border-bottom: 5px solid #000; 
padding: 3px 0 3px 1em; 
} 

h2 {background-color: #638; color: #fff;} 

div#leftbox {      /*** No side padding or borders, to avoid the IE5.x box model problem ***/ 
position: absolute; 
left: 10px; 
width: 150px; 
color: #ee8; 
padding-top: 10px; 
} 

#middlebox { 
margin: 0 34% 0 170px; 
border-left: 3px solid #000; 
border-right: 3px solid #000; 
padding: 10px; 
background-color: #dda;     /*** This div has a background to cover the 2-tone body BG ***/ 
} 

div#rightbox {    /*** No side padding or borders, to avoid the IE5.x box model problem ***/ 
position: absolute; 
right: 25px;     /*** IE5/mac will show a horizontal scrollbar  
        if this is less than 16px, or other units are used 
        http://www.l-c-n.com/IE5tests/right_pos/ ***/            
width: 30%; 
color: #820; 
padding-top: 10px; 
} 

--> 
</style> 
</head> 

<body> 

<h1> 
自由伸展的三栏式版面（Three Column Stretch）（页首） 
</h1> 

<div id="leftbox"> 
<pre class="brush:php;toolbar:false"> 
<strong>#leftbox</strong> { 
position: absolute; 
left: 10px; 
width: 180px(150px?); 
}

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这个栏段的背景是利用 body 卷标设定的图片，以垂直方向重复贴上所产生的。图片的宽度和中间栏段的左边界(margin)相等，高度为20px，这样可以减少图片重复的次数，加快演算上色的速度。

这一栏的内容(#leftbox)以绝对位置(absolutely positioned)的方式放在左边的区域。另外因为底层背景图片的尺寸限制，需要给定一个以像素作单位的"宽度(width)"值。

测试用连结