import 'package:flutter/material.dart';
void main() {
 runApp(const MyApp());
}

class MyApp extends StatelessWidget {
 const MyApp({super.key});

 @override
 Widget build(BuildContext context) {
 return MaterialApp(
 title: 'My App',
 theme: ThemeData(
 colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
 useMaterial3: true,
 ),
 home: const HelloPage(),
 debugShowCheckedModeBanner: false,
 );
 }
}

class HelloPage extends StatelessWidget {
 const HelloPage({super.key});
 @override
 Widget build(BuildContext context) {
 return Scaffold(
 appBar: AppBar(
 title: const Text('Home'),
 backgroundColor: Theme.of(context).colorScheme.primaryContainer,
 ),
 body: const Center(
 child: Text(
 'Hello, World!',
 style: TextStyle(fontSize: 24,),
 ),
 ),
 );
 }
}