     var logoInitialPositionY:CGFloat = 0
     var welcomeLabelInitialPositionY:CGFloat = 0
     
+    // ParallaxRates
+    var backgroundParallaxSpeed:CGFloat!
+    var mountainParallaxSpeed: CGFloat!
+    
     override func viewDidLoad() {
         super.viewDidLoad()
     

    var firstAnimationView: DeviceView!
    var secondAnimationView: LockView!
    var thirdAnimationView: ReceiptView!
    // ParallaxRates
    let backgroundParallaxRate:CGFloat = 0.5 // 0.4 for ipad
    let mountainParallaxRate: CGFloat = 0.57 // 0.45 for ipad
    
    @IBOutlet var scrollView: UIScrollView!
    @IBOutlet var getStartedButton: UIButton!

        pageControll.currentPage = scrollView.currentPage
    }
    
    func updateAnimationViewProgress() {
        
        let progress = scrollView.pageProgressInPercentage
        switch progress {
        case -1.0...1.0:
            firstAnimationView.progress =  progress
            logoImageView.center.y = logoInitialPositionY + scrollView.contentOffset.x
