This navigation is what you see on this page. On a small screen it stacks, and on a larger screen, the nav items float to the right of the logo. This will work for simpler sites that have up to 3 or 4 nav items.
The breadcrumb navigation shows where you are in a site’s hierarchy. The links in this pattern can be updated with the utility class .link-muted if you would like them to be dark gray instead of blue.
The menu nav, based on Primer’s menu is an updated version of this design pattern. It typically lives on the left or right side of page and is used to show long lists of pages that exist in a group (like documentation).