You can change your campaign fonts easily by choosing a particular registration path, clicking “Edit”/”Social posts and invites”. Once you are on that page, scroll down and find the “Font family” drop-down menu.
You can use the following fonts:
- Roboto
 - Oswald
 - Open Sans
 - Lato
 - Montserrat
 - Source Sans Pro
 - Raleway
 - PT Sans
 - Merriweather
 - Nunito Sans
 - Concert One
 - Prompt
 - Work Sans