<!DOCTYPE HTML>
<title>Bug 1405929 reftest reference</title>
<style>

table {
  border-collapse: collapse;
  display: inline-table;
  vertical-align: top;
  margin: 20px;
  width: 20px;
}

td {
  background: green border-box;
  padding: 20px;
  width: 10px;
}

.bb {
  border-bottom: 5px dashed fuchsia;
}

</style>

<table>
  <tbody>
    <tr>
      <td>
      <td>
    <tr>
      <td colspan="2" class=bb>
    <tr>
      <td colspan="2">
  </tbody>
</table>