边框在屏幕上而不是边框上?

I'm currently making a game in Swift/SpriteKit and I'm having a problem. Whenever I make the border for my game, the border is always around the iPhone/iPad FRAME and not the screen. So when my ball bounces it goes off of the screen and bounces off the "iPhone FRAME" and not the "scene/frame." I'm currently making a game in Swift/SpriteKit