I think that in this case the images speak louder than the words.
I want to get this effect:

But the best thing I can do with CSS3:

And the code for this is absolutely terrible:
box-shadow: 1px 1px hsl(0, 0%, 27%),
2px 2px hsl(0, 0%, 27%),
3px 3px hsl(0, 0%, 27%),
4px 4px hsl(0, 0%, 27%),
5px 5px hsl(0, 0%, 27%),
6px 6px hsl(0, 0%, 27%),
7px 7px hsl(0, 0%, 27%),
8px 8px hsl(0, 0%, 27%),
...
Is there any way to create such an effect using pure CSS3? I don't mind it being 3D, but isometric would be preferable.
I do not need to place the content on the sides of the box, just in the foreground, so I only work with one element <div>.
Here is what I still have: http://jsfiddle.net/X7xSf/3/
Any help would be appreciated!