title: Reduce space between menu groups inside navigation drawer
body: <p>I want to reduce the space between each menu group in the <strong>Navigation drawer</strong> (In the following image, space between the two lines).</p>
  
  <p><a href="https://i.stack.imgur.com/xDx5Y.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/xDx5Y.jpg" alt="enter image description here"></a></p>
  
  <p>I've created a custom style and tried the following attributes</p>
  
  <pre><code>&lt;item name="android:paddingTop"&gt;0dp&lt;/item&gt;
  &lt;item name="android:paddingBottom"&gt;0dp&lt;/item&gt;
  </code></pre>
  
  <p>They only reduced the padding around the items text.</p>
  
  <blockquote>
    <p>Even the following attributes didn't worked</p>
  </blockquote>
  
  <pre><code>&lt;item name="android:layout_marginTop"&gt;0dp&lt;/item&gt;
  &lt;item name="android:layout_marginBottom"&gt;0dp&lt;/item&gt;
  </code></pre>