Indexed Stack Full Screen Image Using Flutter Android App

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        debugShowCheckedModeBanner: false,
        home: Scaffold(
            appBar: AppBar(
                backgroundColor: Colors.red,
                title: Text('IndexedStack Full Screen Image')
            ),
            body: Center(
                child: DemoPage()
            )
        )
    );
  } }

class DemoPage extends StatefulWidget {
  @override
  _DemoPageState createState() => _DemoPageState();
}

class _DemoPageState extends State<DemoPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(
        children: <Widget>[
          Container(
            decoration: BoxDecoration(
              image: DecorationImage(
                image: AssetImage('assets/background.jpg'),
                fit: BoxFit.fitHeight,
              ),
            ),
          ),
          Positioned(
            bottom: 48.0,
            left: 10.0,
            right: 10.0,
            child: Card(
              elevation: 8.0,
              shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(8.0),
              ),
              child: Column(
                children: <Widget>[
                  Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: Text(
                      "India",
                      style: TextStyle(
                        fontSize: 20.0,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ),
                  Padding(
                    padding: const EdgeInsets.all(16.0),
                    child: Text(
                        "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book."),
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}