Styling Counters in CSS

There are many ways to create and style counters, which is why I wanted to write this guide and also how I plan to organize it: going from the most basic styling to the top-notch level of customization, sprinkling in between some sections about spacing and accessibility. It isn’t necessary to read the guide in order — each section should stand by itself, so feel free to jump to any part and start reading.

Source: Styling Counters in CSS | CSS-Tricks