Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/external/wpt/html/rendering/non-replaced-elements/tables/table-column-width.html 

<!doctype html>
<link rel="match" href="table-column-width-ref.html">
<table style="display: block">
  <colgroup style="display: block">
    <col style="border: 1px solid green; display: block" width="0"></col>
  </colgroup>
</table>
<script>
  document.querySelector("col").append("Text");
</script>