     /* ====================================================================== */
     
     public let wkWebView: WKWebView = WKWebView()
+    
+    public var showNavigationProgress = true
     
     public var tintColor = UIColor(red: 0, green: 122/255, blue: 1, alpha: 1) {
         didSet { updateTintColors() }

}


extension KYWebViewController: PageHistoryViewControllerDelegate {
    
    func pageHistoryViewController(

        
        switch keyPath {
        case KVOKeyPath.estimatedProgress:
            guard showNavigationProgress else { return }
            
            navigationController?.setProgress(Float(wkWebView.estimatedProgress), animated: true)
            
        case KVOKeyPath.canGoBack:
