Stack(
      children: [
        for (int i = 0; i < 6; i++)
          Positioned(
              left: 24.0 * i,
              child: Container(
                  height: 32.0,
                  width: 32.0,
                  decoration: BoxDecoration(
                      color: Colors.yellow,
                      borderRadius: BorderRadius.circular(22.0),
                      border: Border.all(color: Colors.black)))),
      ],
    ));