Yes! With new updates to our website builder, you're now able to customize your site powered by Direct with custom scripts and style sheets.
NOTE: At the moment, this is a more "developer-friendly" than user-friendly function, but we're working on some templates that will make this much easier moving forward!
This can all be done within the "Customize Website" page in the SITE EDITOR section!
For next steps check out Customizing style sheets + scripts