Is it possible to use a card/border layout with in a different color scheme?

[kanlukasz]

Hi

I use the Gruvbox theme on a daily basis. I like this color scheme. I'd like to implement a card/border layout.
I mean I don't need any additional settings from your theme, just the card layout with those nice borders.

Is it possible to copy a certain css range from your theme and use it in Gruvbox? If so, what range?

This is what I want to achieve:

PS. Maybe I could try to adjust some settings to use these colors into your theme, but I prefer to stick with Gruvbox because it's very fast

I will be grateful for your help