WebOS don't have support for CSS grid?

[ssaguiar]

I am developing an app wich is a video player for an iptv provider.

The app is based on html5, css and javascript.

At this point everything done till now is working and tested in 5 different browsers and in a Samsung smart tv.

The problem is that when I installed this app in a LG tv it messed up all the interface.

After searching for the problem I discovered that the use og css grid was the problem.

LG WebOs doesn't have support for the grid system? The css grid exists at least from 2017.

Any clues on how to solve this problem or I have to rewrite one version of the app only for the LG?

 

Thanks for any help.