* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
  }
  
  body {
    background-color: #f0f8ff;
    color: #333;
    line-height: 1.6;
    padding-top: 60px; /* To prevent content from hiding under fixed nav */
  }
  
  /* Header */
  header {
    background: #3f51b5;
    color: white;
    padding: 20px;
    text-align: center;
  }
  
  /* Navigation */
  nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    display: flex;
    justify-content: center;
    background: #303f9f;
    padding: 10px 0;
  }
  
  nav a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    font-weight: bold;
    transition: color 0.3s;
  }
  
  nav a:hover {
    color: #ffeb3b;
  }
  
  /* Search Bar */
  .search-container {
    display: flex;
    justify-content: center;
    margin: 20px;
  }
  
  .search-container input[type="text"] {
    width: 60%;
    padding: 10px;
    font-size: 16px;
    border: 2px solid #ccc;
    border-radius: 5px;
  }
  
  /* Section Styling */
  section {
    padding: 30px 20px;
    text-align: center;
    border-bottom: 2px solid #333;
  }
  
  /* Highlight section headings */
  section h2 {
    color: #ff4081;
    margin-bottom: 20px;
  }
  
  /* Alternating section background colors */
  section:nth-of-type(odd) {
    background-color: #e3f2fd;
  }
  
  section:nth-of-type(even) {
    background-color: #fffde7;
  }
  
  /* Book Section */
  .book-section {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
  }
  
  .book {
    background: white;
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 15px;
    width: 260px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
  }
  
  .book:hover {
    transform: scale(1.03);
  }
  
  .book img {
    width: 100%;
    height: auto;
    border-radius: 5px;
  }
  
  .book h3 {
    font-size: 18px;
    margin: 10px 0 5px;
  }
  
  .book p {
    font-size: 16px;
    margin-bottom: 10px;
  }
  
  .buy-btn {
    background: #ff5722;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
  }
  
  .buy-btn:hover {
    background: #e64a19;
  }
  
  /* Footer */
  footer {
    background: #212121;
    color: white;
    text-align: center;
    padding: 20px 10px;
    margin-top: 30px;
  }
  
  footer a {
    color: #ffeb3b;
    text-decoration: none;
    margin: 0 5px;
  }
  
  /* Responsive */
  @media (max-width: 600px) {
    .book-section {
      flex-direction: column;
      align-items: center;
    }
  
    .search-container input[type="text"] {
      width: 90%;
    }
  }