import 'package:flutter/material.dart'; import 'package:triangle/screens/mainwindow.dart'; void main() { runApp(Triangle()); } class Triangle extends StatelessWidget { Triangle({super.key}); @override Widget build(BuildContext context) { return MaterialApp( debugShowCheckedModeBanner: false, home: const Mainwindow(), theme: calcTheme, ); } final ThemeData calcTheme = ThemeData( inputDecorationTheme: const InputDecorationTheme( border: OutlineInputBorder( borderSide: BorderSide(color: Colors.blueAccent), borderRadius: BorderRadius.all(Radius.circular(15.0)), ), ), textTheme: const TextTheme( bodyMedium : TextStyle(fontSize: 24.0), titleLarge: TextStyle(fontSize: 40.0), titleMedium: TextStyle(fontSize: 24.0), ), ); }