In GTK 2. X add a GtkAlignment as the parent of whatever you want to center and align 0.5 (disable fill).
Fixed will use all space available, what you need here is to catch the resize event on one of the parents, either the viewport or the Fixed, my guess is that Viewport will work better, then, get the size of the Fixed, and move it's child according tho the size of the child and the size of the fixed.
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.