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<!DOCTYPE html>
<!-- Any copyright is dedicated to the Public Domain.
   - http://creativecommons.org/publicdomain/zero/1.0/ -->

<html class="reftest-wait">
  <script>
  function runTest() {
    // Insert a <summary> as the first child of the <details>.
    var summary = document.createElement("summary");
    var text = document.createTextNode("Summary");
    summary.appendChild(text);

    var details = document.getElementById("details");
    details.insertBefore(summary, details.children[0]);

    document.documentElement.removeAttribute("class");
  }
  </script>
  <body onload="runTest();">
    <details open id="details">
      <summary>Second Summary</summary>
      <p>This is the details.</p>
    </details>
  </body>
</html>