title: ios UICollectionView separation on top / bottom between cells
body: <p>I have a collection view, is working fine, and I have adjusted the separation for the X padding,</p>
  
  <p>and it works fine,
  but for the Y padding between cells, doesn't seem to adjust to NO separation</p>
  
  <p>This is my code for the layout</p>
  
  <pre><code>UICollectionViewFlowLayout *layoutItem=[[UICollectionViewFlowLayout alloc] init];
      layoutItem.sectionInset = UIEdgeInsetsMake(0, 0, 0, 0);
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/PxMkJ.png" alt="enter image description here">
  So how can I set the separation on top / bottom to 0px? Between cells?,</p>
  
  <p>thanks!</p>