block colour options</td>
  <td align="center"><code>u-block--white</code>, <code>u-block--grey</code></td>
</tr>
<tr>
  <td>section use</td>
  <td align="center"><code>&lt;main&gt;</code></td>
</tr>
<tr>
  <td>width type</td>
  <td align="center">fixed</td>
</tr>
<tr>
  <td>has heading</td>
  <td align="center">true</td>
</tr>
<tr>
  <td>theme(s)</td>
  <td align="center">CU</td>
</tr>
<tr>
  <td>variants</td>
  <td align="center"><a href="#grid-column-settings">3 column</a>, <a href="#grid-column-settings