There is a problem loading the CSS-files. From what I'm guessing it is that your server doesn't support the compression of the file.
If I look at the loaded styles that is included on your site it ends unexpectedly in the middle of it. The URL it is loaded from is:
When I change the URL to not include the
?c=1 it loads the complete file.
I downloaded the theme and looked in the "style.php" file, and what the
?c=1 does is adding compression with gzip:
$compress = (isset($_GET['c']) && $_GET['c']);
$force_gzip = ($compress && 'gzip' == $_GET['c']);
Try editing your main CSS file to not include the query string, that might solve the problem. In your style.css change
@import 'styles/style.php?c=1'; to