.header {
    align-items: center;
    font-family: Arial;
    gap: 12px;
}

body.page {
    text-align: center;
    font-family: Arial;
    padding: 1%;    
}

blockquote {
    padding: 20px;
}

ul {
    text-align: left;
}

.bookimg {
    max-width: 100%;
    height: 250px;
}

.buy-btn {
      background: green;
      color: white;
      border: none;
      border-radius: 30px;
      padding: 14px 36px;
      font-size: 1.2rem;
      font-weight: 600;
      box-shadow: 0 4px 16px rgba(25, 118, 210, 0.12);
      cursor: pointer;
      transition: background 0.3s, transform 0.2s;
      outline: none;
    }
    .buy-btn:hover, .buy-btn:focus {
      background: lightgreen;
      transform: translateY(-2px) scale(1.04);
      box-shadow: 0 6px 20px rgba(25, 118, 210, 0.18);
    }