bugShadowTableViewCell.swift

class HomeCardViewCell: UITableViewCell {

    private let cardContainer: UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.backgroundColor = .white
        return view
    }()

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        addSubviews()
        setupAnchors()
        contentView.backgroundColor = UIColor(red: 245/255, green: 246/255, blue: 252/255, alpha: 1)
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    override func layoutSubviews() {
        super.layoutSubviews()
        cardContainer.cornerRadius(25)
        cardContainer.applyShadow()
    }

    private func addSubviews() {
        contentView.addSubview(cardContainer)
    }

    private func setupAnchors() {
        NSLayoutConstraint.activate([
            cardContainer.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 20),
            cardContainer.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 10),
            cardContainer.trailingAnchor.constraint(equalTo: contentView.trailingAnchor, constant: -20),
            cardContainer.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -10),
            cardContainer.heightAnchor.constraint(equalToConstant: 200)
        ])
    }
}

class HomeController: UIViewController, UITableViewDelegate, UITableViewDataSource {

    private var customView: HomeViewBase {
        view as! HomeViewBase
    }

    override func loadView() {
        super.loadView()
        let customView = HomeViewBase()
        customView.delegate = self
        customView.dataSource = self
        view = customView
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        customView.setDelegateAndDataSource()
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        setupNavigation()
    }

    private func setupNavigation() {
        title = "Test"
        navigationController?.navigationBar.barTintColor = .systemBlue
        navigationController?.navigationBar.titleTextAttributes = [.foregroundColor: UIColor.white]
        navigationController?.navigationBar.tintColor = .white
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        15
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "\(HomeCardViewCell.self)", for: indexPath)
        return cell
    }
}

extension UIView {

    func cornerRadius(_ value: CGFloat) {
        clipsToBounds = true
        layer.cornerRadius = value
    }

    func applyShadow(color: UIColor = .black, opacity: Float = 0.1) {
        layer.masksToBounds = false
        layer.shadowColor = color.cgColor
        layer.shadowOpacity = opacity
        layer.shadowRadius = 10
        layer.shadowOffset = CGSize(width: 0, height: 10)
        layer.shouldRasterize = true
    }
}