.flatpickr-calendar {
  border: #cccccc 1px solid;
  background: #333333;
}

.flatpickr-calendar.arrowTop:after {
  border-bottom-color: #333333;
}

.flatpickr-calendar.arrowBottom:after {
  border-top-color: #333333;
}

.flatpickr-months .flatpickr-month {
  background: #333333;
}

.flatpickr-current-month .flatpickr-monthDropdown-months {
  background: #333333;
}

.flatpickr-current-month .flatpickr-monthDropdown-months .flatpickr-monthDropdown-month {
  background-color: #333333;
}

span.flatpickr-weekday {
  background: #333333;
}

.flatpickr-day.selected,
.flatpickr-day.startRange,
.flatpickr-day.endRange,
.flatpickr-day.selected.inRange,
.flatpickr-day.startRange.inRange,
.flatpickr-day.endRange.inRange,
.flatpickr-day.selected:focus,
.flatpickr-day.startRange:focus,
.flatpickr-day.endRange:focus,
.flatpickr-day.selected:hover,
.flatpickr-day.startRange:hover,
.flatpickr-day.endRange:hover,
.flatpickr-day.selected.prevMonthDay,
.flatpickr-day.startRange.prevMonthDay,
.flatpickr-day.endRange.prevMonthDay,
.flatpickr-day.selected.nextMonthDay,
.flatpickr-day.startRange.nextMonthDay,
.flatpickr-day.endRange.nextMonthDay {
  background: #999999;
  border-color: #aaaaaa;
}