I dont seem to be able to edit the already ongoing thread (theme.co/apex/forum/t/where-to-add-a-file-in-a-child-theme/2268) here, so i had to start a new one.

the problem is i edit the css (integrity-light.css) in the following location:
wp-content/themes/x/framwork/legacy/cranium/css/dist/site/integrity-light.css
so of course when i update xtheme all the changes are gone.
therefor i tried in an staging enviroment, installed a child theme, activated the child theme, put the changes inside the style.css file in the child theme, and was hoping by updating the theme my changes would stay - but they dont.
so where do i have to put the css changes in order for things not to get lost while updating.
you can see what i mean by looking at the menu here: https://barentsnaturgass.no/
and how it looks like after installing the child theme with the new style.css file here: http://barentsnatur.staging.wpengine.com/
i would highly appreciate some help.
