.whatsapp-fab{
  position:fixed; right:16px; bottom:16px;
  background:#25d366; color:#fff; padding:10px 14px;
  border-radius:999px; font-weight:700; text-decoration:none;
  box-shadow:0 8px 20px rgba(0,0,0,.2);
  z-index: 9999;
}
.card-product-img {
  aspect-ratio: 4/3; object-fit: cover;
}