list font issue

Hi, my list works but it doesn’t match my site’s font. I tried the following without result:
[catlist name=”Matteo Gariglio” catlink_tag=”span” catlink_class=”catlinkclass”]

and in css:
span.catlinkclass {
font-family: ‘Arimo’, Helvetica, Arial, Lucida, sans-serif;
font-weight: bold;
}

Any idea? many thanks!
http://docstories.net/documentarists/matteo-gariglio/

http://wordpress.org/extend/plugins/list-category-posts/