.whatsapp-icon {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 70px;
    height: 70px;
    z-index: 99999;
}
.whatsapp-icon a {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    transition: transform 0.3s;
}
.whatsapp-icon a:hover {
    transform: scale(1.1);
}
.whatsapp-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: 0;
}