<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Fraction bar visibility</title>
    <link rel="help" href="https://mathml-refresh.github.io/mathml-core/#mfrac">
    <meta name="assert" content="The CSS visible property affects the rendering of the fraction bar.">
    <link rel="match" href="frac-visibility-001-ref.html">
  </head>
  <body>
    <p>This test passes if you see a green square and no red.</p>
    <div style="background: green; width: 200px; height: 200px;">
      <math>
        <mfrac style="visibility: hidden; color: red">
          <mspace width="200px" height="20px"></mspace>
          <mspace width="200px" height="20px"></mspace>
        </mfrac>
      </math>
    </div>
  </body>
</html>