Flutter Column Of Expanded Widgets

FlutterColumnOfExpandeds.dart

// on dartpad:  https://dartpad.dev/391f0c9c13d49962573a83b0ce9fc305
import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.dark().copyWith(scaffoldBackgroundColor: darkBlue),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: MyWidget(),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Expanded(
          child: Text('Hello, World!',
              style: Theme.of(context).textTheme.headline4),
        ),
        Expanded(
          child: Text('Hello, World!',
              style: Theme.of(context).textTheme.headline4),
        ),
        Expanded(
          child: Text('Hello, World!',
              style: Theme.of(context).textTheme.headline4),
        ),
      ],
    );
  }
}