Thank you very much, Ron. I think it should work when I will set a child to Frontier theme. Actually, I started with a child theme because I needed many custom things, but I dropped this idea after some update with elements’ names changes. I just got lost in code, dropped the child, and started all over with custom CSS instead. Now, I afraid to update theme on the site before I will test it on a local server. Where can I find the information on details of consequent Frontier updates? It will help to adjust child theme as needed.
Thank you again for your quick response and clear explanation.