How to make a png overlay on top in css?

Question

css

Hello!
How to make it look like a png overlay on top?
In this case, I can't make the red table on top of the blue one look like a png.
Here is my code , thanks!

Answer 1

Just add z-index: 2 to the .block property https://jsfiddle.net/3f8qy3wa/1/

Answer 2

Oh god flex and sass? It's the same table :)