Untitled

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  get indigo => null;

  get teal => null;

  @override
  Widget build(BuildContext context) {
    const title = 'Shop App';

    return MaterialApp(
      theme: ThemeData(
        primarySwatch: Colors.teal,
      ),
      debugShowCheckedModeBanner: false,
      title: title,
      home: Scaffold(
        appBar: AppBar(
          title: const Text(title),
        ),
        body: Container(
          margin: const EdgeInsets.symmetric(vertical: 30.0),
          height: 200.0,
          child: ListView(
            scrollDirection: Axis.horizontal,
            children: <Widget>[
              Padding(
                padding: const EdgeInsets.only(left: 10.0, right: 10.0),
                child: Container(
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10.0),
                      color: Colors.black),
                  width: 160.0,
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(left: 10.0, right: 10.0),
                child: Container(
                  width: 160.0,
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10.0),
                      color: Colors.green),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(left: 10.0, right: 10.0),
                child: Container(
                  width: 160.0,
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10.0),
                      color: Colors.blue),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(left: 10.0, right: 10.0),
                child: Container(
                  width: 160.0,
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10.0),
                      color: Colors.grey),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(left: 10.0, right: 10.0),
                child: Container(
                  width: 160.0,
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10.0),
                      color: Colors.amber),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(left: 10.0, right: 10.0),
                child: Container(
                  width: 160.0,
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10.0),
                      color: Colors.blueAccent),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(left: 10.0, right: 10.0),
                child: Container(
                  width: 160.0,
                  decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(10.0),
                      color: Colors.pink),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}