Simply give the class a background (if you are just giving arrows or some basic images).
If you make a class that shows a div as not hidden, then you can use the same code you already have to add that class to the DIV that is hidden..
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.