.float{
    position:fixed;
    width: 60px;
    height: 60px;
    bottom:40px;
    right: 40px;
    background-color: #25d366;
    color: #fff;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 100;
}
.float:hover{
    text-decoration: none;
    color:#25d366;
    background-color: #fff;
}
.my-float{
    margin-top: 16px;
}