title: Find Divs with Class x but should not have class y
body: <pre><code>&lt;ul&gt;
  &lt;li class="clsLi"&gt;
  &lt;div class="abc xyz"&gt;&lt;/div&gt;
  &lt;div class="arrow"&gt;&lt;/div&gt;
  &lt;div class="abc xyz"&gt;&lt;/div&gt;
  &lt;div class="abc"&gt;&lt;/div&gt;
  &lt;div class="abc"&gt;&lt;/div&gt;
  &lt;div class="abc xyz"&gt;&lt;/div&gt;
  &lt;/ul&gt;
  &lt;/li&gt;
  </code></pre>
  
  <p>I am trying to select the divs that have the class "abc" but not "xyz"</p>