I use fontawesome on this forum (which uses Karax) and it works fine (for example [here](https://github.com/nim-lang/nimforum/blob/5714ad0c6aafcd7b95a433d97f7b4069d5cc791b/src/frontend/threadlist.nim#L75)).
It's possible that something changed between fontawesome versions or karax versions. Do try removing your whole input(required = "", `type = "text", class = "input", placeholder = "uživatelské jméno" )` block though, you've got a bunch of things there that might be causing problems like the unicode placeholder and the `type`. Otherwise you can also try using the fontawesome version that I'm using: [https://github.com/nim-lang/nimforum/blob/5714ad0c6aafcd7b95a433d97f7b4069d5cc791b/public/karax.html#L12](https://github.com/nim-lang/nimforum/blob/5714ad0c6aafcd7b95a433d97f7b4069d5cc791b/public/karax.html#L12)
