.float{position:fixed;width:60px;height:60px;bottom:25px;left:30px;background-color:#25d366;color:#fff;border-radius:50px;text-align:center;font-size:35px;box-shadow:2px 2px 3px #999;z-index:100}.float:hover{text-decoration:none;color:#25d366;background-color:#fff}