@media (max-width: 767px) {
  .carousel-inner .carousel-item > div {
      display: none;
  }
  .carousel-inner .carousel-item > div:first-child {
      display: block;
  }
}

 .carousel-inner .carousel-item.active,
 .carousel-inner .carousel-item-next,
 .carousel-inner .carousel-item-prev {
  display: flex;
}

/* medium and up screens */
@media (min-width: 768px) {
  
   .carousel-inner .carousel-item-end.active,
   .carousel-inner .carousel-item-next {
    transform: translateX(25%);
  }
  
   .carousel-inner .carousel-item-start.active, 
   .carousel-inner .carousel-item-prev {
    transform: translateX(-25%);
  }
}

 .carousel-inner .carousel-item-end,
 .carousel-inner .carousel-item-start { 
transform: translateX(0);
}