Flutter: neu

main.dart

import 'package:flutter/material.dart';

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

class NeumorphicApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Neumorphic App',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        body: Center(
          child: Text('Neumorphic'),
        ),
      ),
    );
  }
}