Good day everyone. I was wondering if it was possible to modify T3's layout In such way that I'll show certain modules inside a smaller "box".
Something like this:


I've been trying to do it using the custom code feature, toying around with variables.less and modifying block codes for days but still no dice.
Is it possible to do it? If so, which file should I be looking at?

I'm using t3_blank.

Thanks in advance for your attention.
Have a nice day.