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<!doctype html>
<html class="reftest-wait">
<title>dialog: close and re-add modal dialog during overlay transition</title>
<link rel="help" href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element">
<link rel="help" href="https://drafts.csswg.org/css-position-4/#overlay">
<link rel="match" href="pass-dialog-ref.html">
<script src="/common/reftest-wait.js"></script>
<dialog id="dialog1">PASS</dialog>
<dialog id="dialog2">FAIL</dialog>
<style>
  dialog::backdrop { background-color: black; }
  #dialog1 {
    transition-property: overlay, display;
    transition-duration: 100s;
  }
</style>
<script>
  const dialog1 = document.getElementById("dialog1");
  const dialog2 = document.getElementById("dialog2");

  dialog1.showModal();
  dialog2.showModal();
  dialog1.close();
  requestAnimationFrame(() =>
    requestAnimationFrame(() => {
      // dialog1 no longer "in top layer" even if rendered in top-layer, should
      // be added as last top layer element.
      dialog1.showModal();
      takeScreenshot();
    })
  );
</script>