Copied templates and remote tamplates forget the values of the classes

Hi!

I tried out this problem with two different template sites, and same the problem.
First I tried Fancy Bricks 2.0 version (you have to only copy-paste the template element from the demo site.
Everything copied, I excetued the custom codes. But the design are broken.
I can see the custom css classes, but when i click to someone, I cant see any set up values.

Secondly I tried out the BricksAwesome remote template.
I can inster the template. I Excetuted the custom code (here is an simple css)
But the design is broken.

https://jam.dev/c/08c9ce99-1043-4660-9e4b-0d38b33ecacd