A lot of people (I mean not regular people, but professional front-end developers) think that animations based on particles are difficult to implement. It’s not true. Every developer with basic skills in JS+canvas can create amazing effects very easily. I wrote an article about these animations.
The article is in Russian, but the code examples and pens from CodePen are simple and should be understandable without knowledge of the language.
Simple UI framework. RSCSS, REM-based sizes, fluid typography and other nice ideas. This website is powered by it.