.float{
    position: fixed;
    width: 100px;
    height: 100px;
    background-color: #25d366;
    top: 60px;
    right: 40px;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    box-shadow: 2px 2px 3px #999;
    z-index: 999;
}
.fa-whatsapp{
    font-size: 700%;
}
.float:hover{
    background-color:#fff;
    color: #25d366;
}