Full width page moesia pro

I am trying to get the page http://revo.sisonke-design.com/biographie/ to be full width, i.e. fullscreen. It is done with page builder and the template frontpage (although it is not the frontpage…). I have tried to assign the width 100% with css, but nothing worked. Could you please help me out with the correct css for this?? thanks a lot

i solved it… i had to indicate the starting page in the settings…