#back-top a,#back-top i{font-size:24px}#back-top{position:fixed;bottom:30px;right:30px;z-index:9999;background:linear-gradient(145deg,#fc0,#fd3);border-radius:50%;width:50px;height:50px;box-shadow:0 8px 20px rgba(0,0,0,.15);opacity:.9;transition:transform .3s,background-color .3s}#back-top:hover{transform:scale(1.1) rotate(5deg);background-color:#ffc107}#back-top a{display:flex;justify-content:center;align-items:center;height:100%;color:#fff;text-decoration:none;transition:color .3s}#back-top a:hover{color:#343a40}@media (max-width:768px){#back-top{bottom:20px;right:15px;width:45px;height:45px}#back-top i{font-size:20px}}