flutter elevated button
const ElevatedButton({
Key? key,
required VoidCallback? onPressed,
VoidCallback? onLongPress,
ButtonStyle? style,
FocusNode? focusNode,
bool autofocus = false,
Clip clipBehavior = Clip.none,
required Widget? child,
}) : super(
key: key,
onPressed: onPressed,
onLongPress: onLongPress,
style: style,
focusNode: focusNode,
autofocus: autofocus,
clipBehavior: clipBehavior,
child: child,
);