header{width:96%;margin:0 0 0 0;padding:6px 2% 6px 2%;font-family:"trebuchet s", verdana, sans-serif;color:fff;
tent{margin:0 0 0 2%;positioive;}
<html xmlns="http://.w3./1999/xhtml">
<!--go-->
<head>
<h1>??????????</h1>
<title>404 - ??????????????</title>
<!--
</head>
<h2>404 - ??????????????
<meta http-equiv="tent-type" tent="text/html; charset=gb2312"/>
.tent-tainer{background:fff;width:96%;margin-top:8px;padding:10px;positioive;}
</style>
<fieldset>
<body>
h2{font-size:1.7em;margin:0;color:cc0000;}
<style type="text/css">
<!doctype html pulc "-//w3c//dtd xhtl 1.0 strict//en" "http://.w3./tr/xhtml1/dtd/xhtml1-strict.dtd">
h3{font-size:1.2em;margin:10px 0 0 0;color:000000;}
fieldset{padding:0 15px 10px 15px;}