#whatsapp-chat-bubble {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    background-image: url('https://upload.wikimedia.org/wikipedia/commons/6/6b/WhatsApp.svg');
    background-size: 60%;
    background-repeat: no-repeat;
    background-position: center;
    box-shadow: 0 0 0 rgba(0, 0, 0, 0.4);
    animation: pulse 2s infinite;
    z-index: 9999;
    cursor: pointer;
}
@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        transform: scale(1.1);
        box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}