https://www.youtube.com/watch?v=8KFYJSdsBLs&list=PLnIaYcDMsScxP2Nl8pEbmI__wkF0YVu0a&index=4 c:\Users\newstep\StudioProjects\my_first_flutter\lib\main.dart---------- import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData(primarySwatch: C..