jellyfin-web/src/components/viewManager/viewContainer.css

.mainAnimatedPage {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    contain: layout style size;
    /* Can't use will-change because it causes the alpha picker to move when the page scrolls*/
    /*will-change: transform;*/
}

@keyframes view-fadeout {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}
@keyframes view-fadein {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes view-slideleft {
    from {
        transform: translate3d(100%, 0, 0);
    }

    to {
        transform: none;
    }
}

@keyframes view-slideleft-r {
    from {
        transform: none;
    }

    to {
        transform: translate3d(-100%, 0, 0);
    }
}

@keyframes view-slideright {
    from {
        transform: translate3d(-100%, 0, 0);
    }

    to {
        transform: none;
    }
}

@keyframes view-slideright-r {
    from {
        transform: none;
    }

    to {
        transform: translate3d(100%, 0, 0);
    }
}