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

class WalkthroughScreen extends StatefulWidget {

  @override
  State<StatefulWidget> createState() {
    return _WalkthroughScreenState();
  }
}

class _WalkthroughScreenState extends State<WalkthroughScreen> {

  @override
  void initState() {
    super.initState();
  }

  @override
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        extendBodyBehindAppBar: true,
        body: Container(
          color: Colors.red,
        )
    );
  }
}


class MyBehavior extends ScrollBehavior {
  @override
  Widget buildViewportChrome(
      BuildContext context, Widget child, AxisDirection axisDirection) {
    return child;
  }
}