in QuizDemo/QuizDemo/Custom/UIView.swift [16:31]
func applyShadow() {
let shadows = UIView()
shadows.frame = self.frame
shadows.clipsToBounds = false
self.addSubview(shadows)
let shadowPath = UIBezierPath(roundedRect: shadows.bounds, cornerRadius: 10)
let layer = CALayer()
layer.shadowPath = shadowPath.cgPath
layer.shadowColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0.1).cgColor
layer.shadowOpacity = 1
layer.shadowRadius = 20
layer.shadowOffset = CGSize(width: 0, height: 10)
layer.bounds = shadows.bounds
layer.position = shadows.center
shadows.layer.addSublayer(layer)
}