table
      {
          counter-reset: Serial;           /* Set the Serial counter to 0 */
      }

      /*table
      {
          border-collapse: separate;
      }*/

      table tr td:first-child:before
      {
        counter-increment: Serial;      /* Increment the Serial counter */
        content: "" counter(Serial); /* Display the counter */
        text-align: center;
      }