<!DOCTYPE html>
<html>
<head>
<style type="text/css">
div { position: absolute; height: 10px; width: 10px; }
</style>
</head>
<body onload="document.getElementById('c').style.counterIncrement = 'z';">
<div style="-moz-column-count: 2;"><div id="c" style="white-space: pre;">
<div>
<div></div></div></div></div>
</body>
</html>