func setCardView() {
        cardView.backgroundColor = .white

        cardView.layer.cornerRadius = 10.0

        cardView.layer.shadowColor = UIColor.gray.cgColor

        cardView.layer.shadowOffset = CGSize(width: 0.0, height: 0.0)

        cardView.layer.shadowRadius = 6.0
        cardView.layer.shadowOpacity = 0.7
    }