H5_Flutter/lib/view/notfound.dart

import 'package:flutter/material.dart';

class NotFoundPage extends StatefulWidget {
  const NotFoundPage({Key? key}) : super(key: key);

  @override
  State<NotFoundPage> createState() => _NotFoundPageState();
}

class _NotFoundPageState extends State<NotFoundPage> {
  @override
  Widget build(BuildContext context) {
    return Container(color: Colors.yellow,alignment: Alignment.center,child: const Text('404 Page not Found!',textAlign: TextAlign.center,),);
  }
}