#footer {
    position: relative;
}

.modal {
    z-index: 999;
}

.modal-backdrop {
    z-index: 9;
}

.whatsapp-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    left: auto;
    z-index: 999;
    transform: scale(0.8);
    transition: 0.3s all ease;
}

.whatsapp-button:hover {
    transform: scale(1);
    transition: 0.3s all ease;
}

@media (max-width: 576px) {
    .whatsapp-button {
        right: -15px;
        transform: scale(0.6);
    }

    .whatsapp-button:hover {
        transform: scale(0.8);
    }

}

@media (min-width: 577px) and (max-width: 767px) {
    .whatsapp-button {
        right: 0;
        transform: scale(0.7);
    }

    .whatsapp-button:hover {
        transform: scale(0.9);
    }

}