Checking RaisedButton text style in Cupertino Widget and Material Widget - Flutter

RaisedButton_sample.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  Widget build(BuildContext context) {
    return CupertinoApp(
      home: HomeScreen(),
    );
  }
}

class HomeScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return CupertinoPageScaffold(
      child: Center(
        child: RaisedButton(
          child: new Text(
            'Hello there',
          ),
          onPressed: () {},
        ),
      ),
    );
  }
}