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chromium/third_party/blink/web_tests/fast/multicol/filter-in-second-column.html 

<!DOCTYPE html>
<p>The word "PASS" should be seen below.</p>
<div style="-webkit-columns:2; -webkit-column-gap:0; width:10em;">
    <br>
    <div style="-webkit-filter:grayscale(90%);">PASS</div>
</div>