For example typography can be set with Font, Color and Font size each of its groups of selectors inherit those properties and one might modify the color and another modify Font size..
The plugin can be accesed from the Customizer inside The Typography..
Create typography and assign it some options create group of selectors and inside it create some CSS or Block selectors..
If you want to preview the different fonts before selecting one you can preview them in Google Fonts repository..
Note The typography editing is assigned to the capability.
Log in to WordPress admin and navigate to Plugins > Add New..
Now you can go to any post where Block editor is enabled or go Theme Customizer...
This plugin lets you select fonts from Google Fonts repository that will be loaded when selecting them in the editor, and loaded on the front end site..
inline style sheet is embeded with CSS styles and, if one or more Font Family are selected, external style sheet is embeded.
Interested in development.., check out SVN repository, or subscribe to the development log by RSS...
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