body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #fafafa;
}
header {
  background: #333;
  color: white;
  padding: 1em;
  text-align: center;
}
header nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  padding: 20px;
}
.product-card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  padding: 10px;
  text-align: center;
}
.product-card img {
  max-width: 100%;
  border-radius: 10px;
}
#carrito {
  padding: 20px;
}
#cart-items {
  list-style: none;
  padding: 0;
}
button {
  background: #333;
  color: white;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
  border-radius: 5px;
}
button:hover {
  background: #555;
}