/* bootstrap 4 轮播图 垂直滚动*/
.carousel-vertical .carousel-inner .carousel-item-next.carousel-item-left,
.carousel-vertical .carousel-inner .carousel-item-prev.carousel-item-right {
    -webkit-transform: translateY(0);
    transform: translateY(0);
}

.carousel-vertical .carousel-inner .active.carousel-item-left,
.carousel-vertical .carousel-inner .carousel-item-prev {
    -webkit-transform: translateY(-100%);
    transform: translateY(-100%);
}

.carousel-vertical .carousel-inner .active.carousel-item-right,
.carousel-vertical .carousel-inner .carousel-item-next {
    -webkit-transform: translateY(100%);
    transform: translateY(100%);
}