There are various navigation you can use in the template.
The Main Bottom Navigation
This is the main navigation used in the template. It’s displayed at the bottom of the pages except the landing page

This navigation type has site-header--bottom
class in the header.
The Main Top Navigation
This navigation type displayed on the landing page

and has next structure
This navigation type has site-header--landing
class in the header.
The Full-width Navigation
This navigation type can be seen when you the full-width menu is opened

and has next structure