The typography options make it easy for you to customize the font style and size of different elements of your site in one place. The following elements are currently supported.
Inside each option, you can customize the font, font variation, size, line height, spacing, color, and other features. Here is an example.
Once you change settings for a particular element, only that element will be affected throughout your website. If you change typography options from inside your website, they will over-ride the global settings.