如何在UiWebView中只显示站点的一部分？

let webView = UIWebView(frame: CGRect(x: 0, y: 0, width: 320, height: 480))
let url = URL(string: "https://www.example.com")
let request = URLRequest(url: url!)
webView.loadRequest(request)

class ViewController: UIViewController, UIWebViewDelegate {
    // ...
    
    func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebView.NavigationType) -> Bool {
        guard let url = request.url else {
            return true
        }
        
        // 检查URL是否是要显示的部分
        if url.absoluteString.contains("example.com/show-only") {
            return true
        } else {
            return false
        }
    }
    
    // ...
}

override func viewDidLoad() {
    super.viewDidLoad()
    
    webView.delegate = self
}