Desktop preview top-bottom margins
Hello,
I'm working on a small dimensions artboard 480x272 px size to be specific. In desktop preview mode I seem to have margins from top/bottom which I can't get rid of, the screen will not allow me to resize it height wise any more. Is there any way to get rid of them and just have the size of the window be the one I'm working on? Why is there a margin from top and bottom?
I can't scale up/down the design artboards as that would require redoing the work.

Thanks
