Responsive design homepage not working

Hi there

For a website I created I'm encountering issues on other displays. While for instance on my laptop screen the picture on the homepage seems to almost fit perfectly, if I open the website on my monitor or other displays, things seem to go south.
Any help?

www.filipwouters.be

You have the section set to 27 rows high, and the image takes up 26 rows (leaving one space at the bottom). This is not a responsive design for the height, it's fixed by the 27 rows. if you want it to be responsive and fill the screen you need to set the section height to L and set the image as a background if you want it to fill the height of the screen.

Thanks a lot for the help, following your instructions however causes the image to fill the entire screen whilst I only need it to take up half of it.