Black containers after export Photoshop

Hello Everyone!

Please take a look at the picture.
After exported from photoshop to animate ones put on on screen, I noticed this problem.
Unfortunately I put a background only after that I finished the work…

Thank you in advance!

Federico

FIXED.

I am sorry but was a rendering problem given by my pc.

After switching it off and make it…relax… is not anymore giving this issue.

Thank you

Federico