File: dynamic-change-simplified-layout-002.html

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<!DOCTYPE html>
<link rel="match" href="../reference/ref-filled-green-100px-square.xht" />
<link rel="help" href="https://drafts.csswg.org/css-flexbox/" />
<meta name="assert" content="Tests that certain dynamic changes don't lead to a flex item being sized as zero, instead of its stretched size." />
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="display: flex; width: 100px; height: 100px; background: red;">
  <div style="contain: layout size; height: 100px; flex: 1; background: green;">
    <div id="target"></div>
  </div>
</div>
<script>
document.body.offsetTop;
document.getElementById('target').style.width = '1px';
</script>