body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
}

header {
  background-color: #333;
  color: white;
  text-align: center;
  padding: 1em 0;
}

#products {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2em;
}

.product {
  border: 1px solid #ddd;
  border-radius: 5px;
  padding: 1em;
  margin: 1em;
  background-color: white;
  text-align: center;
}

.product img {
  max-width: 100%;
  height: auto;
  border-bottom: 1px solid #ddd;
  margin-bottom: 1em;
}

.add-to-cart {
  background-color: #28a745;
  color: white;
  border: none;
  padding: 0.5em 1em;
  cursor: pointer;
  font-size: 1em;
  border-radius: 5px;
}

.add-to-cart:hover {
  background-color: #218838;
}

#cart {
  padding: 2em;
  background-color: white;
  border-top: 2px solid #333;
}

#cart-items {
  margin-bottom: 1em;
}

#checkout-button {
  background-color: #007bff;
  color: white;
  border: none;
  padding: 0.5em 1em;
  cursor: pointer;
  font-size: 1em;
  border-radius: 5px;
}

#checkout-button:hover {
  background-color: #0056b3;
}