Once you have started the site builder and made all your settings, so your navbar, button sets and footer, you need to decide on a build type.
With the Build Type Skip equal, before we generate the style guide and add new classes, we check which classes already exist.
The already existing classes are then kept in their existing form. If new classes would have the same name through the site builder process, they are skipped and not added. All new classes, that is, classes with different names, on the other hand, will be added.