* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  padding: 30px;
}

.page-wrapper {
  display: flex;
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

#product-container {
  flex: 2;
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

#cart-container {
  flex: 1;
  background-color: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  height: fit-content;
}

#product-container div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid #eee;
}

#cart-container div {
  padding: 8px 0;
  border-bottom: 1px solid #eee;
  color: #333;
}

button {
  padding: 8px 15px;
  background-color: #4a90d9;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
}

button:hover {
  background-color: #357abd;
}