shadow-dom-mozilla-1066554-ref.html

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<!DOCTYPE html>

<html>

<meta charset="utf-8">

<title>Test for Mozilla bug 1066554 - Shadow DOM loads MathML stylesheets as needed</title>

<body>

  <math>

    <msup>

      <mi>X</mi>

      <mi>X</mi>

    </msup>

  </math>

</body>

</html>