A part of section #team hidden when moving from regular page to front page

When I go from regular page i.e.:
http://edumoto.net/opinie-kursantow/
to front page section
http://edumoto.net/#team
top part of it is hidden under main navigation bar.
The same happens with #contact section.

When I move beteween sections on front page only, everything works fine.

Could you tell me why?