Flutter Stacked Items with Row/Column

main.dart

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: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    final colors = [Colors.blue, Colors.red, Colors.yellow, Colors.amberAccent];
    final reverse = colors.reversed.toList();
    const heightFactor = 0.8;
    const widthFactor = 0.8;
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Container(
        color: Colors.black12,
        child: Column(
          children: [
            const Text('Hello Stacked Boxes'),
            const SizedBox(height: 16),
            SizedBox(
              child: Column(
                verticalDirection: VerticalDirection.up,
                mainAxisSize: MainAxisSize.min,
                children: [
                  Align(
                    heightFactor: heightFactor,
                    child: Row(
                      mainAxisSize: MainAxisSize.min,
                      textDirection: TextDirection.rtl,
                      children: List.generate(
                        colors.length,
                        (index) => Align(
                          alignment: Alignment.centerRight,
                          widthFactor: widthFactor,
                          child: Container(
                            height: 50,
                            width: 50,
                            decoration: BoxDecoration(
                              shape: BoxShape.circle,
                              color: colors[index],
                            ),
                          ),
                        ),
                      ),
                    ),
                  ),
                  Align(
                    heightFactor: heightFactor,
                    child: Row(
                      mainAxisSize: MainAxisSize.min,
                      textDirection: TextDirection.rtl,
                      children: List.generate(
                        colors.length,
                        (index) => Align(
                          alignment: Alignment.centerRight,
                          widthFactor: widthFactor,
                          child: Container(
                            height: 50,
                            width: 50,
                            decoration: BoxDecoration(
                              shape: BoxShape.circle,
                              color: reverse[index],
                            ),
                          ),
                        ),
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}