Nalleto – add an image to the empty header space on the right

Hi,

I’d like to add an image to empty header space (on the right).

I`ve been searching on themes support and I’ve found this:

“The header and content is controlled via “ish-content-overlay-small”, “ish-content-overlay-medium” and “ish-content-overlay-large” css classes. They define how much the content will overlap the header. So maybe this is what you are looking for.”

But when I’ve changed on css panel its width and height but nothing happens… Are these classes valid for Nalleto theme? What are the correct attributes to modify them?

What could be better? Combine the logo to a vector to widen the logo area, or is it possibleI add a vector on the right of the header?

Thanks a lot!