Distance between page title and content (Imagery Theme)

Hello everyone,

I apologize for the banality of the question, I have a problem of distance between the title of the page and its content, far too big.

I tried to intervene in the css style sheet but I could not reduce it, could someone kindly tell me where exactly it should intervene?

Thanks for the support

The page I need help with: [log in to see the link]