title: Can I use multiple ARIA roles on a parent element
body: <p>Can I have multiple roles on a parent element for example:</p>
  
  <pre><code>&lt;div class="row"&gt;
      &lt;div class="col-sm-6" role="rowheader"&gt;
          &lt;p&gt;Access to our award-wi&lt;/p&gt;
      &lt;/div&gt;
      &lt;div class="col-xs-6 col-sm-3" role="row gridcell" &gt;  &lt;&lt;&lt;
          &lt;img src="#{request.contextPath}/resources/books/images/icon_tick_table.png" role="gridcell"
               alt="" title="s" class="table-image"/&gt;
      &lt;/div&gt;
      &lt;div class="col-xs-6 col-sm-3"&gt;
          &lt;img src="#{request.contextPath}/resources/form/hello.jpg" role="gridcell"
               alt=": Yes" title="s" class="table-image"/&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>