I forked the tailwind_formatter package and added support for Temple.
So now if you add the TailwindFormatter.Temple plugin to your .formatter.exs file, you get your TailwindCSS classes sorted!
Check it out here.
Micros
I rolled my own X dot com, but it's write-only and no one will ever read it (no ads or scams though).
If you really want to read it, you can subscribe to the RSS feed of only the yapping.