Gallery too small ( page width )

Hi Tamer, love the theme.

I was wondering how I would be able to better present my gallery on my home page. As it stands it is only taking up a quarter of the screen. I Would like it to be the main focus and therefore take up a bigger part of the screen. Is it possible to make a page where besides the menu, I’m able to maximize the size of the gallery photos? Maybe its possible to increase the width of the page? and Or remove the margin around the image?

Thanks in advance!

The page I need help with: [log in to see the link]