Styles styles provides the ability to override any CSS class in the calendar. You can replace any values with a list of CSS classes. Below is a list of all default classes. tsCopynew Calendar('#calendar', { styles: { calendar: 'vc', controls: 'vc-controls', grid: 'vc-grid', column: 'vc-column', header: 'vc-header', headerContent: 'vc-header__content', month: 'vc-month', year: 'vc-year', arrowPrev: 'vc-arrow vc-arrow_prev', arrowNext: 'vc-arrow vc-arrow_next', wrapper: 'vc-wrapper', content: 'vc-content', months: 'vc-months', monthsMonth: 'vc-months__month', years: 'vc-years', yearsYear: 'vc-years__year', week: 'vc-week', weekDay: 'vc-week__day', weekNumbers: 'vc-week-numbers', weekNumbersTitle: 'vc-week-numbers__title', weekNumbersContent: 'vc-week-numbers__content', weekNumber: 'vc-week-number', dates: 'vc-dates', date: 'vc-date', dateBtn: 'vc-date__btn', datePopup: 'vc-date__popup', dateRangeTooltip: 'vc-date-range-tooltip', time: 'vc-time', timeContent: 'vc-time__content', timeHour: 'vc-time__hour', timeMinute: 'vc-time__minute', timeKeeping: 'vc-time__keeping', timeRanges: 'vc-time__ranges', timeRange: 'vc-time__range', }, });