percent-margins.html | Explore in Territory

<!DOCTYPE html>
<p>Test that using percentage margins on spanners works.</p>
<p>Below there should be a blue square centered inside a yellow square.</p>
<div style="-webkit-columns:3; width:10em; background:yellow;">
    <div style="-webkit-column-span:all; margin:30%; height:4em; background:blue;"></div>
</div>

chromium/third_party/blink/web_tests/fast/multicol/span/percent-margins.html