Removed horozontal scrollbar.

That was just dumb, so it's gone. My issue is that the pictures don't seem
to line up with the captions when the backgrounds are transparent. I was trying to
move them over, but that's never a good idea. Margin's never carry
over right to other screen sizes. So that's a no-go. I'll either have to remake
the images in HTML and line them up right, which might be a good idea, I dunno,
or just leave them how they are and hope for the best. Or possibly revert back to
the old way, but I really don't want to do that.