<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title></title>
<style>
div{
width:600px;
height:400px;
background-color:#0000FF;
position:fixed;
top:50%;
left:50%;
margin-left:-300px;
margin-top:-200px;
}
</style>
</head>
<body>
<div>
</div>
</body>
</html>