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Test Info:

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<style>
#mc { columns: 2; }
#mc div { column-span: all; }
</style>
<div id="mc">
<span><div></div></span><div id="removeme"></div><span id="removemetoo"></span><div></div>
</div>
<script>
document.body.offsetTop;
removeme.style.display = "none";
document.body.offsetTop;
removemetoo.style.display = "none";
</script>