<html>
<head>
<style>
p { -webkit-column-span: all; }
body { display: -webkit-box; -webkit-column-count: 3;}
</style>
</head>
<body>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
document.body.offsetTop;
document.body.appendChild(document.createElement('p'));
document.write("Test passes if no crash.");
</script>