Header and Footer images randomly shrink

Hi there. This happened to me twice now. The first time i ended up resetting the theme back to default and lost about an hour's worth of work. This time it happened again and I am not resetting it again as I have spent HOURS getting my site right. The header and footer images no longer take up the entire width of the page. In the middle of my adding a logo, this issue happened. How can I make it take up the full page again like it did at first? Site: 360MEdiaMArketingTeam.com