While working with a template purchased from DIVICake the home page had 3 blurbs and I needed 4. I copied the modules from the third to a new 4 column and everything looked good. When I exited the page builder the new column and blurb were spaced wrong and other CSS styles were not working correctly.
After suffering some time I looked into DIVI’s caching and this fixed my issue. Here is the path.
DIVI >> Theme Options >> Builder >> Advanced
Turn off “Static CSS Generation” till the site goes live.
I hope this helps someone else out there…