<!DOCTYPE html>
<html class="reftest-print">
<head>
  <style>
    thead {
      position: relative;
    }
    tr {
      height: 60px;
    }
  </style>
</head>
<body>
  <table>
    <thead>
      <tr></tr>
    </thead>
    <tbody>
      <tr></tr>
      <tr></tr>
    </tbody>
  </table>
</body>
</html>