.your_customized_wrapper_class{background-color:#0aa;color:#fff}.your_customized_wrapper_class.secondary{background-color:red!important;color:#fff}.your_customized_wrapper_class.secondary:after{background-size:100% 100%}.container__months .calendar__day:nth-of-type(7n) .day,.container__months .calendar__day:nth-of-type(7n-1) .day{background-color:#42c6c6;color:#fff}.container__months .calendar__day .day.calendar__day--otherMonth{background-color:#fff}