body {
            background-color: #f8f9fa;
        }
        .book-item {
            border: 1px solid #dee2e6;
            border-radius: 8px;
            background-color: #fff;
            padding: 16px;
            margin-bottom: 16px;
        }
        .book-image {
            width: 80px;
            height: auto;
            border-radius: 4px;
        }
        .qty-input {
            width: 70px;
        }