Tags all same size and overlap

New to this widget but unless i haven’t look hard i’m not sure why all the tags are showing up the same size and overlapping vertically?

I know that the number of pages that have a tag determine the size of the tag, i read that above. But why is the tag overlapping with the css?

Check the tag cloud on my page to see what i mean.

Thanks!

http://wordpress.org/extend/plugins/ultimate-tag-cloud-widget/