.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;
}

.whatsapp {
    display: block;
    position: fixed;
}

@media only screen and (min-width: 300px) {
    .whatsapp {
        display: block;
        position: fixed;
        z-index: 100;
    }
}