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chromium/third_party/blink/web_tests/fast/multicol/out-of-flow/abspos-auto-position.html 

<!DOCTYPE html>
<p>There should be a hotpink square, centered inside a yellow rectangle.</p>
<div style="columns:3; column-gap:0; column-fill:auto; padding:10px; height:6em; margin-top:100px; width:18em; background:yellow;">
    <div style="height:6em;"></div>
    <div style="width:6em; height:3em; background:hotpink;"></div>
    <div style="position:absolute; width:6em; height:3em; background:hotpink;"></div>
</div>