<table cellpadding="0" cellspacing="0" role="presentation" width="100%">
<tr>
  <td class="px-sm-16" style="padding: 0 24px;">
    <table cellpadding="0" cellspacing="0" role="presentation" width="100%">
      <tr class="full-width-sm">
        <td class="col stack-sm-last" width="168" style="padding: 0 8px;">
          <h3 style="font-weight: 300;">Last on Mobile</h3>
        </td>
        <td class="col stack-sm-first" width="168" style="padding: 0 8px;">
          <h3 style="font-weight: 300;">Second on Mobile</h3>
        </td>
        <td class="col stack-sm-top" width="168" style="padding: 0 8px;">
          <h3 style="font-weight: 300;">First on Mobile</h3>
        </td>
      </tr>
    </table>
  </td>
</tr>
</table>