File list (Check if you may need any files):
SSD7_ex-4_htmls
...............\book_details.html
...............\checkout1.html
...............\checkout2.html
...............\checkout3.html
...............\checkout4.html
...............\images
...............\login.html
...............\member_account.html
...............\order_result.html
...............\query.html
...............\register.html
...............\register_success.html
...............\update_member.html
...............\view_cart.html
...............\view_order.html