#btn-whats-fixo {
    height: 80px;
    width: 80px;
    color: #25D366;
    padding: 10px;
    border-radius: 50%;
    position: fixed;
    bottom: 80px;
    right: 5px;
    text-align: center;
}
.image-back.img-overlay.overflow-hidden {
    display: none;
}