Content Stacking

<!--HTML-->

<table> /* “Desktop” width — 600px - 300*2 */
	<tr>
    <td class=”col” width=”300”>...</td>
    <td class=”col” width=”300”>...</td>
	</tr>
</table>	

<!--CSS-->

@media only screen and (max-width: 600px) 
{ table, tr, td {
    display: block; /* table-cell -> block */
    width: 100%; 
  }								
}