<!DOCTYPE html> <title> Nested fixedpos in a nested fragmentation context where the outer multicol is the containing block. </title> <link rel="help" href="https://www.w3.org/TR/css-position-3/#abspos-breaking"> <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> <style> .multicol { column-count: 2; column-fill: auto; column-gap: 0px; } #outer { height: 100px; width: 100px; transform: translateX(0); } #inner { width: 50px; } .rel { position: relative; } .abs { position: absolute; } .fixed { position: fixed; height: 100%; width: 100%; top: -100px; background:green; } </style> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div style="height: 100px; width: 100px; background: red;"></div> <div class="multicol" id="outer"> <div class="multicol" id="inner"> <div class="rel"> <div class="abs"> <div class="fixed"></div> </div> </div> </div> </div>