title: Angular use ng-content class not apply
body: <p>I have an application in which I have a layout. In this layout I have a div with 2 ng-content. My problem is that my classes do not apply</p>
  <pre><code>&lt;div class=&quot;col-12 pr-1 pl-0 row m-0 p-0&quot;&gt;
      &lt;ng-content class=&quot;col-6 mr-0 pr-3 pl-0&quot; select=&quot;.content-last-name&quot;&gt;&lt;/ng-content&gt;
      &lt;ng-content class=&quot;col-6 m-0 p-0&quot; select=&quot;.content-first-name&quot;&gt;&lt;/ng-content&gt;
  &lt;/div&gt;
  </code></pre>
  <p>What is the problem</p>