     override func viewDidLoad() {
         super.viewDidLoad()
 
-        self.view.addSubview(textField)
+        view.backgroundColor = .white
+        view.addSubview(textField)
         let tapGesture = UITapGestureRecognizer(
             target: self,
             action: #selector(ViewController.viewTapped)
         )
-        self.view.addGestureRecognizer(tapGesture)
+        view.addGestureRecognizer(tapGesture)
 
         NotificationCenter.default.addObserver(
             self,

import PlaygroundSupport
import Prelude

let textFieldOriginY: CGFloat = 667.0 - 50.0
let textFieldOriginalFrame = CGRect(x: 0.0, y: textFieldOriginY, width: 375.0, height: 50.0)

class ViewController: UIViewController {
    
    private lazy var textField: UITextField = {
        let textField = UITextField(frame: textFieldOriginalFrame)
        textField.borderStyle = .line
        textField.placeholder = "Text Field"

}

let viewController = ViewController()
PlaygroundPage.current.liveView = viewController

//: [Next](@next)
