Leo, thanks for the reply.
I’m still having some issues concerning the upper part of the front page.
I made the site using Safari. It shows perfectly here. But when I open the site with Firefox or IE on windows, it changes the layout a bit. I added pictures to show.
I also added a picture of the mobile layout, not sure why it’s different on your phone.
https://postimg.org/gallery/2ebrfyyp0/
This is the site: http://www.fairfieldcollege.nl/nieuwesite
edit: SOMEHOW I corrected the mobile layout:) but now the logo is squeezed..