let label = UILabel()
                .text("My awesome title")
                .textColor(.white)
                .backgroundColor(.black)
                .textAlignment(.center)
                .font(.boldSystemFont(ofSize: 17))
                .layerCornerRadius(2)
                .clipsToBounds(true)

let label = UILabel()

label.text = "My awesome title"
label.textColor = .white
label.backgroundColor = .black
label.textAlignment = .center
label.font = .boldSystemFont(ofSize: 17)
label.layer.cornerRadius = 2
label.clipsToBounds = true

class MyIntroView: UIView {
    let coverView = UIView().backgroundColor(.red)
    
    let titleLabel = UILabel().font(.boldSystemFont(ofSize: 17))
    let subTitleLabel = UILabel().font(.systemFont(ofSize: 12)).textColor(.gray)

    init() {
        super.init(frame: CGRect.zero)

        addSubview(coverView)
        coverView.addSubview(titleLabel)
        coverView.addSubview(subTitleLabel)
        // ...
    }

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

    func configure(title: String, subtitle: String?) {
        titleLabel.text = title
        subTitleLabel.text = subtitle
    }
}