ensure that html content won't be hidden under navigation bar

deltachat-ios/Controller/WebViewViewController.swift

@@ -47,9 +47,9 @@ class WebViewViewController: UIViewController, WKNavigationDelegate {
     private func setupSubviews() {
         view.addSubview(webView)
         webView.translatesAutoresizingMaskIntoConstraints = false
-        webView.topAnchor.constraint(equalTo: view.topAnchor, constant: 0).isActive = true
+        webView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 0).isActive = true
         webView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: 0).isActive = true
         webView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: 0).isActive = true
-        webView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: 0).isActive = true
+        webView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor, constant: 0).isActive = true
     }
 }