CSS issue between K2-theme and RSS Discuss?

I dont get it. Have been trying again and again, in so many diffrent ways now – but I guess im not CSS skilled enough. I get this white gap between The forumname and The description.

Imgage of problem here:
http://aplausse.yaform.se/k2rsdiscuss.jpg

The site is here: http://snfskane.yaform.se/index.php?pagename=forum&rs_discuss_where=forum&rs_discuss_forum=forumforslag&recent=2