     case expanded
 }
 
-fileprivate let topMargin: CGFloat = 64.0
-fileprivate let cornerRadius: CGFloat = 12.0
 fileprivate let velocityThreshold: CGFloat = 200.0
 
 public protocol SlidingContainerPresentable: class {

        case .ended:
            let timing = UICubicTimingParameters(animationCurve: .easeOut)
            let velocity = recognizer.velocity(in: view)
            let swiped = velocity.y > velocityThreshold
            let shouldReverse = !swiped && percent(for: recognizer) < 0.5
            runningAnimators.forEach { animator in
                animator.isReversed = shouldReverse

                }
                blurEffectView.isUserInteractionEnabled = isShowing
                blurEffectView.effect = isShowing ? self.blurEffect ?? UIBlurEffect(style: .dark) : nil
                self.modalContainer.layer.cornerRadius = isShowing ? self.cornerRadius : 0
            }
            blurAnimator.startAnimation()
            runningAnimators.append(blurAnimator)
