row_constant.dart

final rowConstant = Row(
      crossAxisAlignment: CrossAxisAlignment.center,
      children: <Widget>[
        Text(
          "Period",
          style: TextStyle(
            fontWeight: FontWeight.bold,
            color: Theme.of(context).textTheme.caption.color,
          ),
        ),
        SizedBox(
          width: 30,
        ),
        Text(
          "Last 30 days",
          style: TextStyle(
            fontWeight: FontWeight.bold,
            fontSize: 16,
          ),
        ),
      ],
    );