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chromium/third_party/blink/web_tests/fast/multicol/span/outer-column-break-after-inner-spanner-and-float.html 

<!DOCTYPE html>
<p>The word "PASS" should be seen below.</p>
<div style="columns:2; column-gap:0; width:200px; column-fill:auto; height:40px; line-height:20px;">
    <div style="height:30px;"></div>
    <div style="columns:2;">
        <div style="column-span:all;"></div>
        <div style="float:left;"></div>
        <div>PASS</div>
    </div>
</div>