<!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 水平垂直居中</title></head>
<body><div style="width:100px;height:100px;border:solid 1px #f00;position:absolute;left:50%;margin-left:-25px;top:50%;margin-top:-25px;"></div></body></html>