.whatsapp-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 100;
    animation: pulse 2s infinite;
}

.whatsapp-button img {
    width: 60px;
    height: 60px;
}

@keyframes pulse {
    0% {transform: scale(1);}
    50% {transform: scale(1.1);}
    100% {transform: scale(1);}
}