XCode, Swift, Adapt to all devices : I am a newbie in Swift world. I am trying to design a screen like below. I can do this design for several devices for example IPhone 5 and 5S. This means that my application runs properly on IPhone 5 and 5S. But when I try to run it on IPhone 6 or 6S, my design is broken and disrupted. How can I do a common design for all devices. I am sorry for this question but I need this. Thanks for help.

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/1Wp5Q.jpg