[lowboy]

I think "backwards" is the wrong word. I'd say "uninformed" would be closer to the point.

CMSs manage your content usually through a database, and most of them provide a way to display that content in a structured format. See Wordpress and Drupal. WYSIWYG is not a necessary part of a CMS.

Bootstrap is a (mostly) css library to help provide a better front end development experience for a web site/app. It can be used with the front-facing portion of a CMS or any other kind of site.