Cannot adjust line height below Normal in a Zip List
Support Staff2 Posted by Karn on 14 May, 2012 07:36 PM
Thanks for the message, very sorry you are having trouble.
I believe it totally depends on the code base used on the page
as to whether the size factors of less than one can be used. You
would need it all to be HTML5 for the sizes of less than 100% to be
effective, and many themes and/or other content provided is XHTML1
instead so those particular settings won't be supported.