I have a problem with css

Hello, I have a problem for some reason some parts of css stop working and when i open the stylesheets files in the file manager, the vars and some properties are marked like errors.
Someone can know why I only add more vars the last time I update the file but i already have a few and were working fine.
image

I took a look at your website and from what I see, it seems that the CSS is applying fine. Site elements that use CSS variables are using the proper colors with no problem. If this isn’t the case for you, can you try clearing your browser cache or try using another device.