chromium/third_party/blink/web_tests/fragmentation/break-inside-avoid-with-forced-break.html

<!DOCTYPE html>
<script src="../resources/check-layout.js"></script>
<p>There should be a blue square below.</p>
<div id="multicol" style="position:relative; columns:2; column-fill:auto; column-gap:10px; width:130px; height:120px;">
    <div style="height:30px; background:blue;"></div>
    <div data-offset-x="0" data-offset-y="30" data-expected-height="290" style="break-inside:avoid;">
        <div data-offset-x="0" data-offset-y="30" style="height:10px; background:blue;"></div>
        <div>
            <div data-offset-x="0" data-offset-y="40" style="height:10px; background:blue;"></div>
            <div>
                <div data-offset-x="0" data-offset-y="50" style="height:10px; background:blue;"></div>
                <div data-offset-x="70" data-offset-y="0" style="break-before:column; height:200px;"></div>
            </div>
        </div>
    </div>
</div>
<script>
    checkLayout("#multicol");
</script>