body {
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  text-align: center;
  padding: 40px;
}

header {
  margin-bottom: 40px;
}

.produk {
  background: white;
  padding: 20px;
  border-radius: 10px;
  display: inline-block;
}

img {
  width: 200px;
  margin-bottom: 15px;
}

.harga {
  font-size: 20px;
  font-weight: bold;
}

.btn, button {
  background: #25D366;
  color: white;
  padding: 12px 20px;
  border-radius: 6px;
  border: none;
  text-decoration: none;
  cursor: pointer;
}

.btn:hover, button:hover {
  opacity: 0.9;
  }