Hello, does some one could let me know how (where) modify photo theme_stucco in (where page title/logo appear)

You screenshot looks like a slider block. You should be able to put the page in edit mode, edit that block, and select a new image and text.

sorry i did not notice your answer earlier. I know what you said what I wand to do is to modify the position and position the text uper.

I am also looking fo wher modify only the menu bar (hight ans font size) and not all page’s text