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chromium/third_party/blink/web_tests/external/wpt/css/css-tables/percent-width-cell-dynamic.html 

<!DOCTYPE html>
<link rel="help" href="https://crbug.com/984642" />
<link rel="match" href="../reference/ref-filled-green-100px-square-only.html">
<style>
html { overflow: hidden; }
</style>
<p>Test passes if there is a filled green square.</p>
<div id="target">
  <div style="width: 10%;">
    <div style="display: inline-table;">
      <div style="display: table-cell; width: 100%;">
        <span style="display: inline-block; width: 100%; height: 100px; background: green;"></span>
      </div>
      <div style="display: table-cell;">
        <span style="display: inline-block; width: 10px; height: 100px; background: green;"></span>
      </div>
     </div>
  </div>
</div>
<script>
document.body.offsetTop;
document.getElementById('target').style.width = '1000px';
</script>