<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <style type="text/css">
      html { background-color: grey; }
      td { border: 1px solid white;
           padding-top: 1px;
           padding-bottom: 1px;
           padding-right: 1px;
           padding-left: 1px;
           background-color: black;
           color: red; }
    </style>
  </head>
<body>
  <table>
    <td>
      <math xmlns="http://www.w3.org/1998/Math/MathML">
        <mphantom>
          <mn>60</mn>
          <mo>&#x2062;</mo>