Regex To Get Class Names From CSS 2.0

I have just read part of the CSS 2.0 spec and to tie in with one of my side projects about creating a CSS 2.0 parser in c#, I have created a regex [based off the spec] that should find all the class names in a CSS file.

.[-]?[_a-zA-Z][_a-zA-Z0-9-]|[^\0-\177]\[0-9a-f]{1,6}(\r\n[ \n\r\t\f])?|\[^\n\r\f0-9a-f]*

I intend to create more regex's over the next few days to parse all the other elements that appear inside the CSS spec. Then once these are done I should be able to have a stab at creating a full CSS 2.0 parser.

About Me: Paul Kinlan

I lead the Chrome Developer Relations team at Google.

We want people to have the best experience possible on the web without having to install a native app or produce content in a walled garden.

Our team tries to make it easier for developers to build on the web by supporting every Chrome release, creating great content to support developers on web.dev, contributing to MDN, helping to improve browser compatibility, and some of the best developer tools like Lighthouse, Workbox, Squoosh to name just a few.