No CSS Grid Layout Support?

I've been experimenting with a sheet revision using CSS Grid Layout and it works marvelously in local testing. Unfortunately, it seems as if Roll20 does not support any grid-* properties. When I paste CSS in the CSS Styling tab that includes classes with grid properties the character sheet reacts with not loading any of the CSS at all. When I remove these classes everything works again. CSS Grid Layout is extremely useful and supported by the browsers Roll20 supports. It's a perfect fit for the task of making character sheets. If I had to guess there's some parser that is seeing the CSS grid properties and rejecting the entire custom stylesheet because it doesn't recognize those properties. I'm posting this hoping I'm wrong and there's some way of using this great capability, but I don't think I am. :(

Grid seems to work for me. I just copied the example from your mozilla.org link and added sheet- to all the classes, and it works in a test sheet.

I believe Scott C. has used css grid on his Starfinder sheet.  He's mentioned nothing but good things about it.

Css grid works fine. I would guess that you are using Firefox though. There appears to be a bug where Firefox does not properly support grid when updated. I think it must be a corruption of the update or something similar because not all users report it. Uninstall Firefox, then reinstall from a fresh download and you should be good. To see acharacter sheet with css grid in action, hop into my Starfinder alpha game: <a href="https://app.roll20.net/join/2540841/cZqDWw" rel="nofollow">https://app.roll20.net/join/2540841/cZqDWw</a>

Ok thanks for the tips. It turned out to be nothing to do with grid or Firefox. Apparently, having a class named {whatever}-parent is a bad thing! It just so happened that that class had my grid layout code. Not sure why that naming is a problem, but once I renamed that things started working.&nbsp;