flexbox-starts-at-column-boundary-with-block.html

<!DOCTYPE html>
<p>Check that a flexbox that starts at a column boundary is properly pushed to the next column.</p>
<p>The word "PASS" should be seen below.</p>
<div style="-webkit-columns:2; -webkit-column-gap:0; column-fill:auto; height:90px;">
    <div style="height:80px;"></div>
    <div style="display:flex;">
        <div><div>PASS</div></div>
    </div>
</div>

chromium/third_party/blink/web_tests/fast/multicol/flexbox/flexbox-starts-at-column-boundary-with-block.html