XF 2.2 Picture in block

[Abraham54]

I like to know, how to put a picture in each block.
On my server these pictures exist.

 

[Nicolas FR]

Which block ??

 

[Abraham54]

I like to have a corresponding picture in each block visible for guests and visible for members.
It's a computer help forum.

 

[Nicolas FR]

Which blocks are you speaking ??
Category blocks ?

You have to be more explicit if you wish have support.

 

[Abraham54]

Sorry to be for the misunderstanding, I meant the nodes and then only the categories