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Test Info:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style id="ss">
body { font-family: monospace; }
.c { column-width: 1px; }
.m { margin-bottom: 8px; }
</style>
<script>
function boom()
{
document.documentElement.offsetHeight;
document.getElementById('ss').textContent += '.h { height: 1px; }'
}
</script>
</head>
<body onload="boom();">
<div class="c"><div class="h c"><div class="m"><div class="h m c">1 2 3 4 5 6 7 8 9</div></div><div class="c"><div class="h"></div><div class="h c"><div class="h"></div><div class="h"><div class="m"></div></div><div class="h"></div></div><div class="h"><div class="h"></div><div class="h"></div><div class="h"></div><div><div class="m"></div></div></div></div></div></div>
</body>
</html>