Insert an Image between main-menu and .page-entry-title

Hi and thank you for your awesome theme!

I am trying to insert a different image in each page, as the slider is only on the homepage.
However, all the images are considered to be part of the body and not the header, therefore they are shown after the .page-entry-title.
Is there a way with CSS in which I could put the image in the header under the menu?

Thank you very much

Francesca