<html>
<body>
<table cellspacing="0" cellpadding="0" style="border-spacing: 0;">
<tr style="background-color: green;">
<td width="50px" height="20px"/>
<td style="background-color: red;">
<div>
        <!-- The zero-width input should not be visible -->
        <input style="width: 0px; height: 0px; outline: none; border: 0; padding: 0;"/>
</div>
</td>
<td width="50px"/>
</tr>
</table>
</body>
</html>