body {
  font-family: Arial, sans-serif;
  background-color: #f7f7f7;
  color: #333;
  margin: 0;
  padding: 0;
}
header {
  background-color: #004aad;
  color: white;
  text-align: center;
  padding: 1em;
}
nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}
.producto {
  border: 1px solid #ccc;
  padding: 10px;
  margin: 10px;
  display: inline-block;
  width: 250px;
  background: white;
  border-radius: 10px;
}
button {
  background-color: #004aad;
  color: white;
  border: none;
  padding: 10px;
  border-radius: 5px;
  cursor: pointer;
}
button:hover {
  background-color: #0072ff;
}
#carrito {
  background: #fff;
  margin: 20px;
  padding: 20px;
  border-radius: 10px;
}
footer {
  background: #004aad;
  color: white;
  text-align: center;
  padding: 10px;
}
.pago img {
  display: block;
  margin-bottom: 10px;
}