haokeyy
2008-05-03 14:54
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <body>代码:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
<!--
#layout {
background-color: red;
height: 300px;
width: 400px;
margin: 0 auto;
}
body {
text-align: center;
}
-->
</style>
</head>
<div id="layout">此处显示 id "layout" 的内容</div>
</body>
</html>
这个水平居中的div,在不加额外的div同时,通过css怎么实现,让它垂直居中,