.carousel-arrow{width:50px;height:50px;background-color:rgba(0,0,0,.5);color:#fff;border-radius:50%;display:flex;justify-content:center;align-items:center;cursor:pointer}.carousel-arrow-left{left:10px}.carousel-arrow-right{right:10px}.hover-img{position:relative}.hover-img .img-top{position:absolute;top:0;left:0;z-index:1;transition:opacity .3s ease-in-out}.hover-img:hover .img-top{opacity:0}.zoom-on-hover:hover{transform:scale(1.05);box-shadow:0 0 10px rgba(0,0,0,.15)}