body {
    font-family: Arial, sans-serif;
    padding: 20px;
    text-align: center;
  }
  
  h1, h2, h3 {
    color: #333;
  }
  
  #product-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .product-card {
    width: 200px;
    margin: 10px;
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    text-align: center;
  }
  
  button {
    padding: 10px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
  }
  
  button:hover {
    background-color: #45a049;
  }
  
  input, button {
    padding: 10px;
    margin: 10px;
  }
  
  #order-summary {
    margin-top: 20px;
  }