If you have experience designing and/or coding typography in CSS for the web, what do you find most annoying? What’s hard to do? What’s impossible?

@jensimmons kerning is still pretty annoying. `letter-spacing` can devolve into every letter in a `span`. `font-kerning` doesn’t provide enough control. Something like `grid-template` could be interesting.

Also, FOUT is annoying. Maybe some property for `:root` that would prevent rendering until a font is loaded?

CSS Fonts Module Level 4