chromium/third_party/blink/web_tests/fast/multicol/span/change-spanner-margins-expected.html

<!DOCTYPE html>
<p>Test that changing spanner margins dynamically works.</p>
<p>Below there should be a blue square with a thick black border, and no visible FAIL.</p>
<div style="overflow:hidden; width:20em; background:black;">
    <div style="height:14em; margin:3em; background:blue;"></div>
</div>