title: CollectionView scroll to top
body: <p>I have one CollectionViewController and have 10 cells in it.</p>
  
  <p>But when I run the app it displays the cell at bottom, but I want to display it from top cell at viewDidLoad.</p>
  
  <p>I tried many things but it didn't work.</p>
  
  <p>How to fix it?</p>