code monkeys! attack!

I am fairly knowledgable about code and can manage HTML no problem, but I can't for the life of me figure out why the list on the right side bar (-->) is decreasing in size as it goes. When I set the font size it comes up as 85%, but that's the same on each line. Is it reading it 85% of the previous and on and on and that's why it's collapsing?