.calendarBox {
    filter: invert(90%) hue-rotate(180deg);
    padding: 0;
    display: flex;
    justify-content: center;
}

@media screen and (max-width: 665px) {
    .calendar {
        width: calc(100vw - 40px);
    }

    .big {
        display: none;
    }

    .small {
        display: flex;
    }
}

@media screen and (min-width: 665px) {

    .big {
        display: flex;
    }

    .small {
        display: none;
    }
}