3 images slider at 1 time bootstrap
.carousel-inner .carousel-item-right.active,
.carousel-inner .carousel-item-next {
transform: translateX(33.33%);
}
.carousel-inner .carousel-item-left.active,
.carousel-inner .carousel-item-prev {
transform: translateX(-33.33%)
}
.carousel-inner .carousel-item-right,
.carousel-inner .carousel-item-left{
transform: translateX(0);
}