Thx for the clarification, but that's not really what I want though. I want to use JA Kranos as a responsive template, and I spent over a year working with one of JoomlArts developers to make that happen. And that is because I don't find any other template except JA Kranos to be the perfect template for these sites. And to remake it resposive again from the beginning is the worst nightmare for me.
All I want is to find out why its css is getting messed up when Joomla is updated, fix that, update joomla and keep using the template. Can you please explain if there are any files that I can backup, then update joomla and then replace those files for it to work? I.e first re-install the backup from before joomla was updated, and then backup the css files.