最近需要看看CSS+DIV的相关资料，纠结在div的布局方面，主要原因是不懂position的含义
在网上找到一个好的解说看了一下就明白了。现在贴出来给大家看看。
<!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=gb2312" />
<title>Div + CSS Example, Wayhome's Blog</title>
<style type="text/css">
<!--
body,td,th{font-family:Verdana;font-size:9px;}
-->
</style></head>
<body>
<div style="position:absolute; top:5px; right:20px; 200px; height:180px; background:#00FF00;">
position: absolute;<br />
top: 5px;<br />
right: 20px;<br />
<div style="position:absolute; left:20px; bottom:10px; 100px; height:100px; background:#00FFFF;">
position: absolute;<br />
left: 20px;<br />
bottom: 10px;<br />
</div>
</div>
<div style="position:absolute; top:5px; left:5px; 100px; height:100px; background:#00FF00;">
position: absolute;<br />
top: 5px;<br />
left: 5px;<br />
</div>
<div style="position:relative; left:150px; 300px; height:50px; background:#FF9933;">
position: relative;<br />
left: 150px;<br />
<br />
300px; height: 50px; <br />
</div>
<div style="text-align:center; background:#ccc;">
<div style="margin:0 auto; 600px; background:#FF66CC; text-align:left;">
<p>1</p>
<p>2</p>
<p>3</p>
<p>4</p>
<p>5</p>
<div style="padding:20px 0 0 20px; background:#FFFF00;">
padding: 20px 0 0 20px;
<div style="position:absolute; 100px; height:100px; background:#FF0000;">position: <span style="color:#fff; ">absolute</span>;</div>
<div style="position:relative; left:200px; 500px; height:300px; background:#FF9933;">
position: <span style="color:blue;">relative</span>;<br />
left: 200px;<br />
<br />
300px;<br />
height: 300px;<br />
<div style="position:absolute; top:20px; right:20px; 100px; height:100px; background:#00FFFF;">
position: absolute;<br />
top: 20px;<br />
right: 20px;<br /></div>
<div style="position:absolute; bottom:20px; left:20px; 100px; height:100px; background:#00FFFF;">
position: absolute;<br />
bottom: 20px;<br />
left: 20px;<br />
</div>
</div>
</div>
</div>
</div>
</body>
</html>