If you need to customise theme files at a code level, you’ll need to do so using a child theme. Any changes made via AppearanceEditor to a parent theme will be lost if you ever run a theme update.
For more on creating and using a child theme, please see: Creating a Child Theme
Below you’ll find copies of child themes we’ve created for specific requests. Perhaps you’ll find one useful. Child theme ZIP files can be installed from AppearanceThemesAdd NewUpload Theme.
Starter
A basic child theme to get started with. No changes have been made yet.
Download Polestar Child Theme – Starter