设定.不是对整个和模型的高和宽设定.
<!DOCTY
PE ht
ML P
ubLIC "-//W3C//DTD XHTML 1.0 Trans
ITional//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>demo</title>
<style type="text/css">
*{mar
gin:0; padding:0;}
dl { background:
red;border:10px solid
#000; width:100px; height:100px;}
dt { background:yellow;}
dd { background:green;}
</style>
</head>
<body>
<dl>
<dt>
test of dt</dt>
<dd>test of dd</dd>
</dl>
</body>
</html>
次盒子模型的区域的高宽.