import "package:flutter/material.dart";
  
void main() => runApp(const MyMenuApp());


class MyMenuApp extends StatelessWidget {
  const MyMenuApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: Scaffold(
        body: SizedBox(
          width: 327,
          height: 658,
          child: Center(
            child: Container(
              color: Colors.purple,
              child: DropdownMenu<int>(
                hintText: 'Hint text',
                helperText: 'This is a long helper text that need 3 lines',
                inputDecorationTheme: InputDecorationTheme(
                    helperMaxLines: 3, helperStyle: TextStyle(fontSize: 30)),
                dropdownMenuEntries: <DropdownMenuEntry<int>>[
                  DropdownMenuEntry<int>(
                    value: 0,
                    label: 'MenuEntry Item 1',
                  ),
                ],
              ),
            ),
          ),
        ),
      ),
    );
  }
}