title: Multiple selectors on Angular ng-content
body: <p>I know it's possible to have multiple <code>ng-content</code>'s with different selectors to project content into slots. e.g.</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;ng-content select="h1"&gt;&lt;/ng-content&gt;
  &lt;ng-content select="span"&gt;&lt;/ng-content&gt;
  </code></pre>
  
  <p>My question is, is it possible to have <strong>multiple selectors</strong> on the <strong>same instance</strong> of <code>ng-content</code>, e.g.</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;!-- this doesn't work --&gt;
  &lt;ng-content select="h1, h2, h3"&gt;&lt;/ng-content&gt;
  &lt;ng-content select="span, div"&gt;&lt;/ng-content&gt;
  </code></pre>
  
  <p>similar to how you can have the same rule CSS for multiple selectors, i.e.</p>
  
  <pre class="lang-css prettyprint-override"><code>h1, h2, h3 {...}
  div, span {...}
  </code></pre>