Borrowed Google Chrome's "no internet connection" dinosaur.
I did this a year ago, when I thought that "What if, I should make a 3d pixel art, instead of 2d".
And so, happened that the 'Codepen Challenge' for that week is about dinosaurs.
The first thing popped out from my mind is the Google Chrome's "no internet connection" dinosaur game.
But I used the CSS variables, for a little convenience. I don't know much about CSS variables that time, and I totally don't know about HTML pre-processor.
Here is the demo of the dinosaur.