body {
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: space-around;
  padding: 20px;
}

.store, .cart {
  border: 1px solid #ccc;
  padding: 20px;
  width: 40%;
}

.product, .cart-item {
  margin-bottom: 15px;
}

button {
  padding: 5px 10px;
  cursor: pointer;
}