<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>mfenced element</title>
  </head>
  <body>
    <p>Test passes if you see 6 green squares and no red.</p>
    <p>
      <math>
        <mrow>
          <mspace width="30px" height="30px" style="background: green"></mspace>
          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
          <mspace width="30px" height="30px" style="background: green"></mspace>
        </mrow>
        <mrow>
          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
          <mspace width="30px" height="30px" style="background: green"></mspace>
          <mspace width="30px" height="30px" style="background: lightgreen"></mspace>
        </mrow>
      </math>
    </p>
  </body>
</html>
