main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Stack',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const Scaffold(
        body: StackWidget(),
      ),
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Stack(
        children: [
          Align(
            child: Container(
              //  color: const Color(0xFFABB3FF), //Delete this parameter
              height: 500,
              width: 300,
              decoration: const BoxDecoration(
                color: Color(0xFFABB3FF),
                boxShadow: [
                  BoxShadow(
                    color: Colors.blue,
                    offset: Offset(0, 0),
                    blurRadius: 0,
                    spreadRadius: 0,
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}