Coding a view to respect border proportions

import UIKit


class ViewController: UIViewController {



 //   @IBOutlet weak var imgURL2: UIImageView!

    @IBOutlet weak var FunFactLabel: UILabel!
    let factProvider = FactProvider()

    @IBOutlet weak var button: UIButton!

    //A random fact is immediately loaded when first stared
    override func viewDidLoad() {
        super.viewDidLoad()
        FunFactLabel.text = factProvider.randomFact()

        button.center.x = self.view.frame.height
//        button.center = CGPoint(x: 100, y: 100)

        UIView.animate(withDuration: 2, delay: 0, usingSpringWithDamping: 20, initialSpringVelocity: 15, options: UIViewAnimationOptions.curveEaseIn, animations: ({

                    self.button.center.x = self.view.frame.height * 2
            //self.button.center = CGPoint(x: 100 + 100, y: 100)


            }), completion: nil)



//    override func didReceiveMemoryWarning() {
//        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    //on button press the code will link to the model that contains the data
    //and guided by an instance of the method will return random data
    @IBAction func showFact() {

        FunFactLabel.text = factProvider.randomFact()

//        FunFactLabel.center.y = self.view.frame.height
//        FunFactLabel.center.x = self.view.frame.height


        UIView.animate(withDuration: 2, delay: 0, usingSpringWithDamping: 20, initialSpringVelocity: 15, options: UIViewAnimationOptions.curveEaseIn, animations: {

            self.FunFactLabel.center.y = self.view.frame.height * 2
            //self.FunFactLabel.center = CGPoint(x: 10, y: 10 + 10)

        }, completion: nil)


    }
}