title: DRY less code share between siblings
body: <p>Consider the following DOM:</p>
  
  <pre><code>&lt;div class="first"&gt;
      &lt;div class="nested"&gt;&lt;/div&gt;
  &lt;/div&gt;
  &lt;div class="second"&gt;&lt;/div&gt;
  </code></pre>
  
  <p>In LESS I have:</p>
  
  <pre><code>.first {
      margin: 19px;
  
      .nested{ color: white; }
   }
  </code></pre>
  
  <p>I want to apply <code>margin: 19px</code> to <code>.second</code> as well. </p>
  
  <p>This applies, if the <code>.second</code> div is nested inside <code>.first</code>:</p>
  
  <pre><code>.first {
      &amp;, .second {
          margin: 19px;
      }
  
      .nested{ color: white; }
   }
  </code></pre>
  
  <p>Is it possible to do it inside <code>.first</code> block, so it applies on <code>.second</code> in the above markup structure?</p>