<table border="">
<tr>
<td style="height: 200px;">
<div style="height: 100px; background-color: yellow; width: 20px;"></div>
<table border="" style="height: 100%;">
<tr>
<td>
<div>
<div style="height: 100%; border: solid blue;"></div>
</div>
<div style="height: 300px; background-color: green; width: 100px;"></div>
</td>
</tr>
</table>
</td>
</tr>
</table>