9.1 navigator (main.dart)

//debug release profile
//assets file binary network
//container
// Material , Cupertino
//Stateless .Stateful
//row column wrap container stack
//listview gridview

import 'package:flutter/material.dart';
import 'package:flutter_ui_lesson/screens/first_screen.dart';

//asset file network memory
void main() {
  runApp(const Home());
}
class Home extends StatelessWidget {
  const Home({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: FirstScreen(),
    );
  }
}