appearance->editor edits the theme’s style.css.
The customizer adds CSS differently.
This is good because style.css gets overwritten when the theme is updated, but the custom CSS, which lives elsewhere, is not affected.
What’s faster? I can’t imagine it makes any difference.
Thank you, Steve…
Do you know if there would be an advantage in adding code to both locations if I use a Child Theme?
In a child theme, use the child’s style.css file.
I’m currently doing that using the Child Theme Configurator plugin. I have the option to add my CSS changes to a tab in the plugin’s settings (in which case they are also added to the Theme Editor), or only add them to the Customizer’s Additional CSS setting (in which case they are NOT added to the Theme Editor).
I was just wondering if there are advantages of currently retaining copies of my CSS Changes in the Theme Editor (or is WordPress going to do away with the Theme Editor for some reason)?
What you call the ‘theme editor’ in appearance->editor edits the active theme’s files (style.css). It’s NOT the same as the styles you enter via the customizer. There’s no need to use both.