35 beautiful and user-friendly CSS navigation buttons

Usability is a goal of any website, and a useful navigation bar is a must for every website. It determines where the user is directed and how the user interacts with the site. Without a highly usable navigation bar, the content is worthless. Navigation buttons should be very easy for the user to understand, and should be so guided that the user will not get lost.

The following 35 navigation bars are made use of CSS, I believe you will learn something ^_^