body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background: #f0f0f0;
}
header {
  background: #2c3e50;
  color: white;
  padding: 10px;
  text-align: center;
}
.product-list {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-top: 20px;
}
.product {
  background: white;
  padding: 15px;
  border-radius: 8px;
  width: 200px;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
button {
  margin-top: 10px;
  padding: 10px;
  border: none;
  background: #27ae60;
  color: white;
  cursor: pointer;
  border-radius: 5px;
}
button:hover {
  background: #2ecc71;
}