Yes and No. If the ‘group-team’ class gets added to the markup for ‘topic-avatar’, it should solve the problem, as then you could use topic-avatar.group-team so it only applies to that div/group of elements instead of the entire post/article that it is applying to now.
So duplicating the class onto the topic-avatar, changing the CSS to use .topic-avatar.group-team, should resolve the issue.