Google Doesn’t Expect Full Navigation in Mobile First Pages
When it comes to creating great mobile websites for users, a lot of times things need to be paired down from what might be served on desktop, and one of the top targets for change is the navigation structure. On desktop, many sites have elaborate multi-level navigation menus, but on desktop, the same kind of navigation can result in many disgruntled visitors when they try to use it, since multi-level navigation tends to be extremely difficult to use on mobile.