[Projeto] Prática Flutter

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        title: 'Flutter Demo',
        theme: ThemeData(
          colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
          useMaterial3: true,
        ),
        home: Container(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  Container(
                    color: Colors.amber,
                    width: 100,
                    height: 100,
                  ),
                  Container(
                    color: Colors.red,
                    width: 100,
                    height: 100,
                  ),
                  Container(
                    color: Colors.blue,
                    width: 100,
                    height: 100,
                  )
                ],
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  Container(
                    color: Colors.deepOrange,
                    width: 100,
                    height: 100,
                  ),
                  Container(
                    color: Colors.green,
                    width: 100,
                    height: 100,
                  ),
                  Container(
                    color: Colors.deepPurple,
                    width: 100,
                    height: 100,
                  )
                ],
              ),
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  Container(
                    color: Colors.pink,
                    width: 100,
                    height: 100,
                  ),
                  Container(
                    color: Colors.brown,
                    width: 100,
                    height: 100,
                  ),
                  Container(
                    color: Colors.white,
                    width: 100,
                    height: 100,
                  )
                ],
              )
            ],
          ),
        ));
  }
}

```![Imagem do app](https://cdn1.gnarususercontent.com.br/1/1281904/b282d519-9fa2-4844-9c93-d053d790d007.jpg)