<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1221121">

<style>
</style>
<style>
</style>
<style>
</style>
<div>
  <template shadowrootmode=open>
    <slot style="content-visibility: hidden; display: block"></slot>
  </template>
<embed id="I7" class= accesskey="h">
<meter class="C8">a
<script>
  document.head.appendChild(document.createElement("style"));
  const styleSheet = document.styleSheets[document.styleSheets.length - 1];
  styleSheet.insertRule(":root{}");
  const styleSheet0 = document.styleSheets[0];
  const test2 = document.getElementById("I7");
  test2.className += "fuzzClass5";
  styleSheet0.insertRule('.C8 {}');
  try {
    test2.style.setProperty();
  } catch(e) {}
  document.styleSheets[3].disabled = true;
  test2.style['border-right-color-value'] = '';
  styleSheet0.insertRule('.foo { color: blue }', styleSheet0.cssRules.length);
  document.execCommand("false");
  document.designMode = "on";
</script>
