<!DOCTYPE html> <link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org"> <link rel="help" href="https://www.w3.org/TR/css-break-3/"> <link rel="match" href="contain-strict-with-opacity-and-oof-ref.html"> <p>There should be a (pale) green square below, and no (pale) red.</p> <div style="columns:3; margin-top:-50px; column-fill:auto; height:200px;"> <div style="height:50px;"></div> <div style="will-change:transform; contain:strict; width:100px; height:100px;"> <div style="opacity:0.2; width:100px; height:100px; background:red;"> <div style="position:absolute; width:100px; height:100px; background:green;"></div> </div> </div> </div>