style: ButtonStyle( maximumSize: MaterialStateProperty.all(Size(300.0, 50.0)), minimumSize: MaterialStateProperty.all(Size(200.0, 50.0)), overlayColor: MaterialStateProperty.all(Colors.transparent), side: MaterialStateProperty.all( BorderSide( color: basicColor, width: 2.0, ) ), shape: MaterialStateProperty.all( RoundedRectangleBorder( borderRadius: BorderRadius.circular(20.0), ) ) )