Thank you for your help Jan!
One stupid question: if I would not want any update of responsive theme’s css, couldn’t I simply copy/paste the theme style.css content in the child style.css contest and not use the import feature (at that point it would be redundant)?
it looks exactly like what I have done in the past…..
“This directory can contain as little as a style.css file, and as much as any full-fledged WordPress theme contains:
1. style.css (required)
2. functions.php (optional)
3. Template files (optional)
4. Other files (optional)”
I think I tried with the functions as well, because I might need to change them in the near future. I am new to Worpress but not new to PHP at all.
I try again!