#btt_btn{display:none;position:fixed;bottom:20px;right:30px;z-index:9999999;font-size:18px;border:0;outline:0;background-color:#f4860a;color:white;cursor:pointer;padding:8px 20px;border-radius:4px}#btt_btn:hover{background-color:white}#btt_btn:hover .arrow.up{border:solid #f4860a;border-width:0 3px 3px 0}button i{border:solid white;border-width:0 3px 3px 0;display:inline-block;padding:3px}.up{transform:rotate(-135deg);-webkit-transform:rotate(-135deg)}