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I want to demonstrate the creation of a web page. I want to start out with a basic HTML page, then add CSS to make it look pretty. Then I want to add some (unobtrusive) JavaScript functionality, such as form validation, navigation menus, tabs, tooltips, and maybe a WYSIWYG text area. Then I want to add some AJAX.
I could use some ideas on what kind of page to use as a demo. Here are my ideas for consideration: