#back-to-top{background:#ffd064;border:0;border-radius:100px;bottom:90px;color:#333;cursor:pointer;font-size:20px;line-height:20px;opacity:0;padding:13px 15px;position:fixed;right:15px;text-align:center;text-decoration:none;transition:all .4s ease-in-out;z-index:9999}#back-to-top.show{opacity:.7}#back-to-top.show:hover{background:#0071aa;color:#fff;opacity:1}