It looks like there are <pre></pre> tags wrapping the content and causing this. If you remove these tags from the content area I think it will fix the problem. Or if you needed those tags you could try adding some text wrapping css for the pre tag in your themes cms.css stylesheet. Some posts I found on this at
http://stackoverflow.com/questions/248011/how-do-i-wrap-text-in-a-pre-tag