A basic and properly structured HTML/CSS drop down menu can serve you just as well. In fact, it may make your site appear more responsive to not use animations and instantly display the menu instead.

A software developer from San Francisco managed to do what no one else did before, creating a fully-functional two-way chat using only CSS and HTML, completely ditching JavaScript in the process.

Can a 3D Minecraft implementation be done entirely in CSS and HTML, without a single line of JavaScript in sight? The answer is yes! True, this small clone is limited to playing with blocks in a wo… ...

How about trigonometric functions in CSS? Or from the other direction, check out implementing a CSS (and HTML) renderer on an ESP32.

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing.