I'm currently following the udemy ios8/swift course and I'm completely stuck on the navigationbar part. I'm thinking it might have something to do with the fact that I'm on a higher version of Xcode, but can't seem to find the solution. 

I have to set the constraints for the navbar on 0 on 3 sides so it will be centered and full width in both landscape and portrait mode. When I try to do this, I see a option thats not there on the course (Constrain to Margins). No matter how much I try to adjust the values, the navbar keeps disappearing or moving in the wrong direction. I tried unchecking the constrain to margins function and putting everything on 0, I tried 'resetting to suggested constraints' and lots of other options, but I can't seem to get my navbar look good in both landscape/portrait mode. So basically, what am I doing wrong or is there any other way to do this? 

![The menu with 'Constrain to margins'](https://i.stack.imgur.com/4x7oG.png)
![My result most of the times after trying to get it right](https://i.stack.imgur.com/aIaqv.png)