ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text('message'),
duration: Duration(seconds: 8),
),
);
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text('message'),
duration: Duration(seconds: 8),
margin: EdgeInsets.all(20),
behavior: SnackBarBehavior.floating, // required when writing margin
),
);