import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData.light(),
      home: Home(),
    );
  }
}

class Home extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Whatever"),
        centerTitle: true,
      ),
      body: ListView.builder(
        itemBuilder: (context, index) => Padding(
          padding: EdgeInsets.only(bottom: 10),
              child: AspectRatio(
                aspectRatio: 2,
                child: Container(
                  color: Colors.red,
                  child: Center(child: Text("item : $index")),
                ),
              ),
            ),
      ),
    );
  }
}