a flutter app starter template with column layout written

FlutterStarterColumn

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

/// this is your APP Main screen configuration
class MyApp extends StatelessWidget {
  MyApp({Key? key}) : super(key: key);

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

/// this is a template to start building a UI
/// to start adding any UI you want change what comes after the [ body: ] tag below
class MyHomePage extends StatelessWidget {
  MyHomePage({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: const Color(0xfff4f4f4),
      /*******************--[focus here 🧐]--*******************/
      appBar: AppBar(
        leading: const Icon(Icons.android_sharp),
        title: const Text('App Title'),
        backgroundColor: Colors.teal,
        elevation: 4,
      ),
      body: myWidget(),
      /*******************--[focus here 🧐]--*******************/
    );
  }

  Widget myWidget() {
    return Container(
      padding: const EdgeInsets.all(20),
      color: Colors.blueAccent,
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: const <Widget>[
          /*******************--[focus here 🧐]--*******************/
          Text(
            'Welcome to the Course',
          ),
          /*******************--[focus here 🧐]--*******************/
        ],
      ),
    );
  }
}