#back-to-top-button{position:fixed;right:20px;bottom:20px;background:rgba(0,0,0,.15);color:#fff;padding:9px 16px 10px;font-size:26px;text-shadow:1px 1px 3px rgb(0,0,0,.15);cursor:pointer;display:none}#back-to-top-button:hover{background:rgba(0,0,0,.25);display:block!important}