Add 404 page

src/App.tsx

@@ -31,6 +31,12 @@ const London = React.lazy(
       /* webpackChunkName: "london", webpackPrefetch: true */ "./special/london/London"
     )
 );
+const PageNotFound = React.lazy(
+  () =>
+    import(
+      /* webpackChunkName: "notfound", webpackPrefetch: true */ "./PageNotFound"
+    )
+);
 
 const App = () => {
   const runtime = useRuntime();
@@ -61,7 +67,7 @@ const App = () => {
                     path="address/:addressOrName/*"
                     element={<Address />}
                   />
-                  <Route path="*" element={<Home />} />
+                  <Route path="*" element={<PageNotFound />} />
                 </Route>
               </Routes>
             </Router>

src/PageNotFound.tsx

@@ -0,0 +1,16 @@
+import React from "react";
+import { NavLink } from "react-router-dom";
+import StandardFrame from "./StandardFrame";
+
+const PageNotFound: React.FC = () => (
+  <StandardFrame>
+    <div className="border h-full m-auto flex flex-col justify-center items-center space-y-10">
+      <span className="text-4xl">Page not found!</span>
+      <NavLink className="text-link-blue hover:text-link-blue-hover" to="/">
+        Click here to go to home
+      </NavLink>
+    </div>
+  </StandardFrame>
+);
+
+export default PageNotFound;