mathml/relations/html5-tree/display-2-ref.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>display attribute VS legacy mode attribute (reference)</title>
</head>
<body>
  <p>Test passes if you see four green squares, the last one
    centered and the others left-aligned.</p>
  <p>
    <math>
      <mspace width="100px" height="100px" style="background: green"></mspace>
    </math>
  </p>
  <p>
    <math>
      <mspace width="100px" height="100px" style="background: green"></mspace>
    </math>
  </p>
  <p>
    <math display="inline">
      <mspace width="100px" height="100px" style="background: green"></mspace>
    </math>
  </p>
  <p>
    <math display="block">
      <mspace width="100px" height="100px" style="background: green"></mspace>
    </math>
  </p>
</body>
</html>