.collection-gallery .swiper-button-prev, .collection-gallery  .swiper-button-next {
	opacity:0;
    transition:1s;
}
.collection-gallery:hover .swiper-button-prev, .collection-gallery:hover .swiper-button-next {
	opacity:1;
    transition:1s;
}

.swiper-button-next, .swiper-button-prev { 
    top: 50%;
    width: 25px;
    height: 16px;
    margin-top: 0px;

}