Created by: AndreiTelteu
A quick fix in the case of intercalated list-groups.
In my case i have something like this:
I have intercalated list-groups on 3 levels.
The problem is that the css selector that makes the list-group inside a panel have no borders left and right, applies to any .list-group-item inside .panel > .list-group. To fix the problem i have added >, so that only the list-group with the parent .panel should have no borders.
I have applied my changes in my browser and it works as expected.

I have applied the same fix for any selector that needs this.