@override
  Widget build(BuildContext context) {
    return Scaffold(
        backgroundColor: Colors.cyan[100],
        appBar: AppBar(
          title: const Text("Flutter margin padding"),
          backgroundColor: Colors.blueAccent,
        ), //appbar
        body: Padding(
          padding: const EdgeInsets.only(top: 32,left: 30,right:0,bottom: 0),
          child: Text('Hello Students'),
        )

    ); //scaffold
  }