import 'package:flutter/material.dart'; void main() { runApp(const MyApp()); } class MyApp extends StatelessWidget { const MyApp({Key? key}) : super(key: key); @override Widget build(BuildContext context) { return const MaterialApp( title: 'study', color: Colors.grey, home: loginPage(), ); } } class loginPage extends StatefulWidget { const loginPage({Key? key}) : super(key: key); @override State..