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.

Now [Andy Green] has extended the possibilities with affordable silicon, by producing a proof-of-concept HTML + CSS renderer over h2 on ESP32 for libwebsockets.

And yes, a developer can apply styles conditionally with CSS, but not through a traditional if..else syntax. CSS provides only rudimentary ways to perform calculations and implement conditional logic, ...