how to remove bordre radius from textbutton
Expanded(
                child: TextButton(
                // this is my solution didn't find it anywhere
                  style: ButtonStyle(
                    backgroundColor: MaterialStateProperty.all(Colors.red),
                    shape: MaterialStateProperty.all(
                      RoundedRectangleBorder(borderRadius: BorderRadius.zero),
                    ),
                  ),
                  onPressed: () {
                    playSound(1);
                  },
                  child: Container(
                    child: Text(""),
                  ),
                ),
              )
