/* 添加一些基本的样式 */
 body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
  }
  header {
    background-color: #333;
    color: #fff;
    padding: 10px;
  }
  nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
  }
  nav li {
    margin-right: 20px;
  }
  nav a {
    color: #fff;
    text-decoration: none;
  }
  main {
    padding: 20px;
  }
  .product-details {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
  }
  .product-image img {
    max-width: 100%;
    height: auto;
    text-align: center;
  }
  .product-info h2 {
    margin-top: 0;
  }
  .product-options {
    margin-bottom: 10px;
  }
  .product-options label {
    margin-right: 10px;
  }
  .product-actions {
    display: flex;
    justify-content: space-between;
  }
  .product-actions button {
    background-color: #333;
    color: #fff;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
  }
  .recommended-products, .supplier-products {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
  }
  .recommended-products .product, .supplier-products .product {
    margin: 0 10px;
    text-align: center;
  }
  .recommended-products img, .supplier-products img {
    max-width: 100%;
    height: auto;
  }