Forum:Select a section with CSS

Hello, I can't find a way to select a specific section through CSS, I'll explain it better: I want to change the style of the section named "Navigation" in all pages, the sections has this code Navigazione OTHER CODES my purpose is to add the style " " to the section, to avoid floating elements which will "break" the section like this:

Floating element

Navigation
It's quite simple to select the span through the id "Navigation", but adding  it's useless since the span's width is the same of the text. I need to select the  element, but only the one with that section. I looked at the CSS selectors, but I didn't find a method to select a parent element. Any ideas?