balance-fixed-height-unused-space-simple-block.html

<!DOCTYPE html>
<p>There should be a green square below.</p>
<div style="columns:4; column-gap:0; width:100px; height:150px;">
    <div style="height:400px; background:green;"></div>
</div>

chromium/third_party/blink/web_tests/fast/multicol/balance-fixed-height-unused-space-simple-block.html