.card-teaser .slide-arrow {  z-index: 999; opacity: 0; position: absolute; top: 45%; color: rgba(255, 255, 255, 0.6); font-size: 2.5rem; transition: opacity .5s; }
.card-teaser .arrow-prev { left: 2%; }
.card-teaser .arrow-next { right: 2%; }

.card-teaser:hover .slide-arrow { opacity: 1; }