#myBtn{background-color:#34c1aa;border:1px solid #34c1aa;border-radius:50%;bottom:20px;color:#fff;cursor:pointer;display:none;font-size:25px;height:40px;outline:none;position:fixed;right:30px;width:40px;z-index:99}#myBtn:hover{background-color:orange;border-color:#000}