.MCKIT_WhastApp_Simple .flotante {
    position: fixed;
    display: block;
    bottom: 23px;
    right: 25px;
    max-width: 85px;
    height: 70px;
    width: 100px;
    z-index: 400!important;
    background-image: url('img/whatsapp.png');
    background-repeat: no-repeat;
}

.MCKIT_WhastApp_Simple .flotante:hover {
    background-image: url('img/whatsapp-animado.gif');
}