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

class StatelessPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Stateless Widget'),
          backgroundColor: Colors.white,
        ),
        backgroundColor: Colors.red,
        body: Placeholder(),
      ),
    );
  }
}
downloadDownload PNG downloadDownload JPEG downloadDownload SVG

Tip: You can change the style, width & colours of the snippet with the inspect tool before clicking Download!

Click to optimize width for Twitter