Wider content layout?

Hello! Thank you for providing this lovely theme for free. I was wondering if it is possible to make the content area wider, like the image on the theme’s page shows?

I managed to get rid of the page titles using a plug-in, but I couldn’t figure out how to make my content wider. I had originally intended for the content to vertically line up with the site title. I tried playing around with the css a bit, but it seemed like there was always something preventing me from scaling my content up. I could scale it down no problem.

I’m not sure if this is due to the theme or if certain elements (like the gallery and the slideshow) are just not able to be scaled up after a certain point, however it seems like the margins are my current issue.

Also, unrelated, but I had a small issue with the WordPress social links icon colours. I wanted the icons to be white with a different colour surrounding them, but even though the css said that they were white they were always a dark grey. The colours surrounding the icons worked fine, but no matter what I did the icons themselves stayed grey. In the end I kept the grey and got rid of the surrounding colour which worked well. Just thought I’d mention it while I’m here!

I was using chrome and windows.

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