IlijaMihajlovic

guard let windowScene = (scene as? UIWindowScene) else { return }
        
        window = UIWindow(windowScene: windowScene)
        let navController = UINavigationController(rootViewController: FirstScreen())
        window?.rootViewController = navController
        window?.makeKeyAndVisible()

IlijaMihajlovic

// MARK: - Properties

    lazy var buttonTapped: UIButton = {
        let button = UIButton(type: .system)
        button.setImage(UIImage(named: "more")?.withRenderingMode(.alwaysTemplate), for: .normal)
        button.frame = CGRect(x: 0, y: 0, width: 45, height: 45)
        button.addTarget(self, action: #selector(handleButtonTapped), for: .touchUpInside)
        
        return button
    }()

IlijaMihajlovic

fileprivate func addViewToSubView() {
        [mainView, detailView, descriptionTextView].forEach{view.addSubview($0)}
      }

IlijaMihajlovic

import UIKit

//MARK: - Auto Layout Anchor Extension
extension UIView {
    
    func anchor(top: NSLayoutYAxisAnchor?, bottom: NSLayoutYAxisAnchor?, leading: NSLayoutXAxisAnchor?, trailing: NSLayoutXAxisAnchor?, padding: UIEdgeInsets = .zero, size: CGSize = .zero) {
        
        
        if let top = top {