Site Title Appears on Multiple Lines

I’m using the free Teal theme in sandbox mode (www.Blackbiter.com/sandbox). For some reason, the “m” in my site title, “Blackbiter.com,” drops to the next line. There are multiple CSS sheets and none of them seem to have #site_title. I see logo title, etc. Obviously, I would like the site title on one line. What can I do to fix this problem? Is this a margin issue? font size issue? Help. Any advice would be greatly appreciated. (My old site needs this upgrade desperately.)