th.holiday a:link,
#month_main th.holiday {
background-color: #fdffb7 ; color: black;
}

td.holiday a:link,
#month_main td.holiday {
background-color: #fdffb7 ; color: black;
}

th.weekendholiday a:link,
#month_main th.weekendholiday,
span.flatpickr-weekday:nth-of-type(6),
span.flatpickr-weekday:nth-of-type(7) {
background-color: #transparent  ; color: green;
}


    th.weekend a:link,
    #month_main th.weekend,
    span.flatpickr-weekday:nth-of-type(6),
    span.flatpickr-weekday:nth-of-type(7) {
    background-color:  #transparent; color: darkred;
    }