<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>columnspan/rowspan</title>
    <link rel="help" href="https://w3c.github.io/mathml-core/#table-or-matrix-mtable">
    <meta name="assert" content="columnspan/rowspan attributes are supported on mtd">
    <link rel="match" href="columnspan-rowspan-ref.html">
    <style>
      mtd { padding: 0; }
    </style>
  </head>
  <body>
    <p>This test passes if you see a green square.</p>
    <math>
      <mtable>
        <mtr>
          <mtd colu