.back-to-top{display:block;position:fixed;opacity:0;right:30px;bottom:15px;padding:11px;width:45px;height:45px;border-radius:50px;background:#001978;text-align:center;z-index:5;cursor:pointer;transition:0.2s all ease-in-out;span{color:#fff}}@media (max-width:991px){.back-to-top{right:18px;bottom:65px;display:none}}