Hmm I'm not sure why but it appears you are missing a bunch of lines of CSS from:
Can you try grabbing a fresh module download and overwriting your current style.css file? This should fix it. Let me know if it doesn't.
Thanks for the reply - I have re-downloaded and re-installed the mod and still no love. Please see the attached file (the CSS file for the mod) and let me know if something is missing.