title: Custom "Floating" UITableViewCells
body: <p>I have been searching the web for an answer to this and I am sure it has an easy answer. </p>
  
  <p>I am creating an UITableView in my app and I am wanting it to have "floating" table view cells and a menu at the top. Like this: </p>
  
  <p><img src="https://i.stack.imgur.com/Fh7nx.png" alt="enter image description here"></p>
  
  <p>I am sure that these are custom UITableView Cells, but I am not sure how to create them like this and have them be dynamic in size based on the content and how to include a menu at the top that disappears/shows once the user scrolls down or up. </p>
  
  <p>Any insight on this would be awesome!</p>