qcal/frcal/src/Calendar.scss

@import 'bootstrap/scss/functions';
@import 'bootstrap/scss/variables';
@import 'bootstrap/scss/mixins';
@import 'bootstrap/scss/forms';
@import 'bootstrap/scss/grid';
@import 'bootstrap/scss/buttons';
@import '@common/ui/consts.scss';
@import '@common/ui/MonthBasedCalendar.scss';

@include media-breakpoint-up(xs) {
    .DayOuter.NormalDay {
        @include make-col($size: 1, $columns: 2);
    }

    .DayOuter.ComplementaryDay {
        @include make-col($size: 1, $columns: 1);
    }
}

@include media-breakpoint-up(sm) {
    .DayOuter.NormalDay {
        @include make-col($size: 1, $columns: 3);
    }
}

@include media-breakpoint-up(md) {
    .DayOuter.NormalDay {
        @include make-col($size: 1, $columns: 4);
    }
}

@include media-breakpoint-up(lg) {
    .DayOuter.NormalDay {
        @include make-col($size: 1, $columns: 6);
    }

    .DayOuter.ComplementaryDay {
        @include make-col($size: 1, $columns: 2);
    }
}

@include media-breakpoint-up(xl) {
    .DayOuter.NormalDay {
        @include make-col($size: 1, $columns: 8);
    }
}

@include media-breakpoint-up(xxl) {
    .Month-weekdayHead {
        display: block;
        @include make-row($gutter: 0);
        position: sticky;
        top: 0;
        background: white;
        margin-top: -$spacer * 7.5;
        padding-top: $spacer * 7.5;
        z-index: 19;
    }

    .Month-days {
        margin-top: $spacer;
    }

    .DayOuter.NormalDay, .WeekdayName {
        @include make-col($size: 1, $columns: 10);
    }

    .Day-weekday {
        display: none;
    }
}