showSnackBar function
Implementation
void showSnackBar(BuildContext context, {required String msg}) {
final snackdemo = SnackBar(
content: Text(msg, style: const TextStyle(color: Colors.white)),
backgroundColor: Colors.black,
elevation: 10,
behavior: SnackBarBehavior.floating,
duration: const Duration(seconds: 1),
margin: const EdgeInsets.all(5),
);
ScaffoldMessenger.of(context).showSnackBar(snackdemo);
}