import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      home: MyWidget(),
    ),
  );
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Container(
          width: 300,
          height: 48,
          color: Colors.amber,
          child: const FittedBox(
            child: Text(
              'Flutter',
              style: TextStyle(
                fontSize: 72,
                color: Colors.blue,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
        ),
      ),
    );
  }
}