.whatsapp-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #007bff; /* Color azul */
    color: white;
    padding: 15px;
    border-radius: 50%;
    font-size: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}