home_screen.dart

@override
@override
Widget build(BuildContext context) {
  //1
  return BlocProvider(
    //2
    create: (_) => movieCarouselBloc,
    child: Scaffold(
      //3
      body: BlocBuilder<MovieCarouselBloc, MovieCarouselState>(
        bloc: movieCarouselBloc,
        builder: (context, state) {
          //4
          if (state is MovieCarouselLoaded) {
            return Stack(
              fit: StackFit.expand,
              children: <Widget>[
                FractionallySizedBox(
                  alignment: Alignment.topCenter,
                  heightFactor: 0.6,
                  child: MovieCarouselWidget(
                    movies: state.movies,
                    defaultIndex: state.defaultIndex,
                  ),
                ),
                FractionallySizedBox(
                  alignment: Alignment.bottomCenter,
                  heightFactor: 0.4,
                  child: Placeholder(color: Colors.white),
                ),
              ],
            );
          }
          //5
          return const SizedBox.shrink();
        },
      ),
    ),
  );
}