File: position-area-scrolling-004.tentative.html

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<!DOCTYPE html>
<title>Avoid negative IMCB correctly when scrolled past the anchor</title>
<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#scroll">
<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 id="scroller" style="position:relative; overflow:hidden; width:100px; height:100px; background:red;">
  <div style="anchor-name:--a; margin-top:150px; height:10px;"></div>
  <div id="abspos" style="display:none; position:absolute; position-anchor:--a; position-area:top; width:100px; height:100px;">
    <div style="margin-top:170px; height:100px; background:green;"></div>
  </div>
  <div style="height:1500px;"></div>
</div>
<script>
  scroller.scrollTop = 220;
  abspos.style.display = "block";
</script>