Flutter padding only

main.dart

...

class _MyHomePageState extends State<MyHomePage> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Padding(
        padding: const EdgeInsets.only(top: 12.0),
        child: Text('Widget Padding'),
      ),
    );
  }
}