Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Log into your admin panel and go to Inventory >> Category Editor. Select the category that you are editing. Click the Edit HTML button. Add your HTML and click on the little red arrow button in the top left corner in the WYSIWYG. This will save any information you insert into the WYSIWYG. Then click Update within your category editor (after the WYSIWYG window closes) and you are all set!