[Invertigrate]

Easiest thing is to just do it with JS (https://news.ycombinator.com/item?id=39065858).

Sure it's not correct according to W3, but then again, we have about >200 errors on the page already so it will just be another drop in the bucket (https://validator.w3.org/nu/?doc=https%3A%2F%2Fnews.ycombina...).