title: How can I create a custom container view controller and swap certain parts depending on the users choice?
body: <p>So I posted a question <a href="https://stackoverflow.com/questions/29399665/what-is-the-best-way-to-develop-applications-using-the-auto-layout-in-xcode/29400011#29400011">here</a> and one of the answerers recommended using a custom container view controller.</p>
  
  <p>What I want to do is have an app that works a bit like the one below:
  <img src="https://i.imgur.com/oVvsc5E.jpg" alt="my basic app design"></p>
  
  <p>Its a very bad diagram but what I am trying to make out is that there is a universal background, logo and border; the only thing that needs to change is the content part.</p>
  
  <p>I have looked a lot online and have found nothing about custom container view controller view controllers for swift and how to swap the view controllers for the part that changes according to the user selection.</p>
  
  <p>Would someone be able to explain if this is possible in swift? Maybe it is called something else and I am looking for the wrong thing. If it is possible how can this be done?</p>
  
  <p>Thank you.</p>