<!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/#monolithic"> <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div style="writing-mode:vertical-lr; inline-size:100px; block-size:100px; background:red;"> <div style="columns:2; column-gap:0; column-fill:auto; block-size:50px;"> <div style="block-size:50px; background:green;"></div> <div style="contain:size; block-size:0;"> <div style="block-size:25px; background:green;"></div> <div style="block-size:25px; background:green;"></div> </div> <div style="contain:size; block-size:100px; background:green;"></div> </div> </div>