footer .back-to-top .back-to-top-wrapper img{bottom:0;position:absolute;right:0;transition:all .3s ease-in-out}footer.back-to-top .back-to-top-wrapper{position:relative}footer .back-to-top-wrapper .default-img{opacity:0;visibility:none}footer .back-to-top-wrapper .hover-img,footer .back-to-top-wrapper:hover .default-img{opacity:1;visibility:visible}footer .back-to-top-wrapper:hover .hover-img{opacity:0;visibility:none}@media (max-width:768px){footer .back-to-top .back-to-top-wrapper img{height:49px;width:49px}}