Microsoft launched Windows 98 back on June 15, 1998, and released it to the public 10 days later, on June 25. Since that time, we have a long way. Now, we have Windows 10, which is modern and much more cool looking. However, I still remember those grey, flat UI elements, the blocky-looking dialog boxes and the “Start” button with a pixelated Microsoft logo. Ah! Those were the days. If you still miss that retro design of one of the early versions of Windows, then check out the 98.css, which lets you build Windows 98-inspired UIs for any of your projects.
Another perk of this library is that this project is licensed by MIT. So, this means that you can modify the interfaces as freely as you want to.