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

<html class="reftest-wait">
  <script>
  function runTest() {
    // Remove first <summary> from <details>. Second <summary> should be used.
    var details = document.getElementById("details");
    var summary = document.getElementById("summary");
    details.removeChild(summary);

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