A Font library is composed of the URL of an external Font resource such as Google Fonts.
Implement a Font library by attaching it to a default template from the back-end.
1 – To add new font from back-end click on Live Editor > Web Resources
2 – Font Library can be accessed by clicking on Font button.
3 – You can now add a new Font library or edit an existing one.
4 – Add a Font URL to a JS library inside the URL field.