ElevatedButton createButton(String txt, void Function() onPressing) {
    return ElevatedButton(
      onPressed: onPressing,
      style: ButtonStyle(
          backgroundColor: MaterialStateProperty.resolveWith<Color>(
              (states) => Colors.green.shade700)),
      child: Text(txt,
          style: const TextStyle(
            fontSize: 15,
            color: Colors.white70,
            height: 1,
          )),
    );
  }