<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<style>
body, body * { position: fixed; }
</style>
</head>
<body>
<div>
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<mtable>
<mtr>
<mtd>
<mn>1</mn>
</mtd>
</mtr>
</mtable>
</math>
</div>
</body>
</html>