I am paranoid. A typical web page uses:
Only HTML is necessary.
CSS can be used for tracking, and CSS3 + HTML5 is Turing-complete, it can potentially execute anything on your computer.
I made this site HTML only because I'm sure that it's safe for you and for me.
Soon my government will implement laws that allow them to jail me for the things I see, say and think. Maybe, this already happened. The same can happen to you.