.back-to-top{background-color:#3c1dbb;border-radius:5px;bottom:20px;color:#fff;cursor:pointer;display:none;font-size:16px;padding:10px 15px;position:fixed;right:20px;transition:opacity .3s ease;z-index:1000}.back-to-top:active,.back-to-top:focus,.back-to-top:hover{background-color:#1c0d5f}