main.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Column(children: [
        Container(
            width: 400,
            height: 400,
            color: Colors.red,
            alignment: Alignment.center,
            child: Container(
              width: 600,
              height: 200,
              color: Colors.blue,
            )),
      ]),
    );
  }
}