.RB{text-align:center;width:25px;position:fixed;right:0;bottom:20vh;z-index:999999;background-color:#ea5520;color:#fff;padding-top:10px;padding-bottom:10px;border-radius:8px 0 0 8px;cursor:pointer;-webkit-box-shadow:3px 3px 2px 1px rgba(234,85,32,.2);box-shadow:3px 3px 2px 1px rgba(234,85,32,.2)}