Menu Bar Not Centered

The menu bar on my page is not extending to the full width of the slider. Can you help me fix this?

Also, I’ve put in shortcodes for the 3 boxes below the slider but am not sure how to proceed putting in text. I’m thinking these boxes might also have a problem like the menu bar also since they seem to be pushed to the left.

my site is: http://www.wisdomnw.com/

Theme: Aegaeus

Thank you for your help.