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(
      home: Scaffold(
        body: SingleChildScrollView(
          physics: const BouncingScrollPhysics(parent: AlwaysScrollableScrollPhysics()),
          scrollDirection: Axis.vertical,
          child: Stack(
            children: [
              const SizedBox(
                height: 1440,
                width: 1000,
              ),
              for (var i = 0; i < 100; i++)
                Positioned.fill(
                  top: i * 20,
                  child: Align(
                    alignment: Alignment.topCenter,
                    child: Container(
                      color: Colors.red,
                      height: 15,
                      child: Center(
                        child: Text(
                          '$i',
                          style: const TextStyle(
                            color: Colors.white,
                            fontSize: 11,
                          ),
                        ),
                      ),
                    ),
                  ),
                ),
            ],
          ),
        ),
      ),
    );
  }
}