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

I have a webpage, and all I can do is add code, not remove or change existing code.<br><br>So I have used CSS to modify/remove parts I don't need, and thats worked fine.<br><br>However there is a ...

in that while it parses and renders HTML and CSS with JPEG and PNG image support, it does so only with a subset of HTML and is not tolerant of any malformations. There is also no JS support ...