<!DOCTYPE html> <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> <link rel="help" href="https://www.w3.org/TR/css-position-3/" /> <meta name="assert" content="This test checks that a dynamic OOF-positioned change doesn't cause children to paint differently." /> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div style="display: flex; position: relative; width: 100px; height: 100px;"> <div style="order: 2; margin-left: -100px; width: 100px; background: green;"></div> <div style="order: 1; width: 100px; background: red;"></div> <div id="target" style="position: absolute;"></div> </div> <script> document.body.offsetTop; document.getElementById('target').style.top = '10px'; </script>