class FullPage extends StatefulWidget {
  const FullPage({Key? key}) : super(key: key);

  @override
  State<FullPage> createState() => _FullPageState();
}

class _FullPageState extends State<FullPage> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: CustomScrollView(
        slivers: [
          SliverAppBar(floating: true,),
          SliverList(
            delegate: SliverChildListDelegate(
            [
              Container(
                width: double.infinity,
                child: buildContainer(),
              ),
            ]
          ),
          )
        ],
      ),
    );
  }
  Widget buildContainer() =>
     Column(
      children: [
        Container(
          height: 200,
          color: Colors.orangeAccent,
        ),
        Container(
          height: 200,
          color: Colors.redAccent,
        ),
        Container(
          height: 200,
          color: Colors.red,
        ),
        Container(
          height: 200,
          color: Colors.grey,

        ),
        Container(
          height: 200,
          color: Colors.green,
        ),
        Container(
          height: 200,
          color: Colors.purpleAccent,

        ),
        Container(
          height: 200,
          color: Colors.brown,

        ),
      ],
    );

}