HTML/CSS Navigation Bar Using a List Tutorial - HTML/CSS Float Layout Pt 2 Good Audio
У вашего броузера проблема в совместимости с HTML5
Fixed audio. This tutorial covers how to transition an unordered list, UL, and links into a stylish navigation bar using CSS. This is the second video in a series - for the starter code, please watch the first video. We use our existing CSS class to style the list itself as well as the individual list elements, LI. We will finish by styling our BODY, H1 and H3 tags.
This video is much better quality than the first. I made the first in one take with no edits...sorry.