Hi Rikard,
Thanks for your reply.
The thing is that I try all possible configurations as you recommend in the image as background in color section and the image is not seen complete, full.

Other thing: I have a “fila de grilla” (2 columns) with 2 images and also happens this overlay althoug I have no configuration for it!
It is the 5th row of images (2 images together) for example here:

Thansk a lot for your support,
Margarita