flutter-embed-sample.dart

import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(home: Home()));
}

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('This is in Dartpad'),
      ),
      body: Column(
        children: [
          Container(
            height: 200,
            decoration: BoxDecoration(color: Colors.teal),
            child: Center(
              child: Text('This is embedded using Dartpad'),
            ),
          ),
        ],
      ),
    );
  }
}