But you don’t need to use it, and your sites can still look good without it. How Do CSS and HTML Work Together? If you learned about the web a long time ago, or taught yourself the basics, you may be ...

This separation between structure (HTML) and presentation (CSS) is a fundamental web development best practice that supports both SEO and accessibility.

If you remove the "transition" class from the buckets, the js will not trigger. There is probably a clever way to do a css-only animated menu or slide out, but I don't know it. I stick to js for ...