Generated code from pixels2flutter.dev

main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: Stack(
            alignment: Alignment.topRight,
            children: [
              Container(
                width: 100,
                height: 100,
                decoration: BoxDecoration(
                  color: Colors.blue,
                  borderRadius: BorderRadius.circular(20),
                ),
              ),
              Positioned(
                top: -10,
                right: -10,
                child: Container(
                  width: 50,
                  height: 50,
                  decoration: BoxDecoration(
                    color: Colors.yellow,
                    borderRadius: BorderRadius.circular(15),
                  ),
                  child: Center(
                    child: Icon(
                      Icons.close,
                      color: Colors.white,
                      size: 30,
                    ),
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}