<title>This tests that zero width, but non-empty columns get horizontal space. PASS if the green cell on the right is visible</title>
<style>
td {
  font-size: 20px !important;
  font-family: ahem;
}
</style>
<table cellspacing="0" cellpadding="0" style="width: 800px">
<tr>
<td style="background-color: green; font-size: 0px;"></td>
<td style="background-color: yellow; width: 400px;">PASS if green is visible-></td>
<td style="background-color: green; font-size: 0px;"></td>
</tr>
</table>