[outworlder]

No problems with kerning on my device, that I can see.

The fonts used, just like in books, each have their purpose - https://practicaltypography.com/how-to-use.html

Also, you can change the body text font by clicking the font name at the bottom.

[NikolaNovak]

I've tried it on iPhone and chrome and looks ok.

Firefox in 27" still looks significantly off