@keyframes blink{0%{opacity:1}50%{opacity:0}to{opacity:1}}#backToTopBtn{background-color:#fd5000;border:none;border-radius:50%;bottom:25px;box-shadow:0 4px 6px rgba(0,0,0,.3);color:#fff;cursor:pointer;display:none;font-size:36px;height:60px;line-height:1;outline:4px solid #fd5000;outline-offset:5px;position:fixed;right:25px;transition:opacity .3s ease;width:60px;z-index:999}#backToTopBtn.blinking{animation:blink 1s infinite}#backToTopBtn:hover{background-color:#212529;outline:4px solid #212529}@media (max-width:991px){#backToTopBtn{font-size:28px;height:40px;width:40px}}