<!DOCTYPE html>
<html>
<head>
<style type="text/css">
body {
height: 100px;
width: 300pt;
-moz-column-width: 100pt;
-moz-column-gap: 0;
}
#x {
padding: 100px;
}
#overflow {
height: 400px;
float: left;
}
</style>
</head>
<body><div id="x"><div id="overflow"></div>K</div></body>
</html>