Вот такой вариант Вам не подойдет?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title></title>
<style type="text/css">
html, body {
margin: 0px;
padding: 0px;
width: 100%;
height: 100%;
}
.wrapper {
width: 100%;
height: 100%;
background: yellow;
}
</style>
</head>
<body>
<div class="wrapper">myWrapper</div>
</body>
</html>