formating breadcrum location within header.php css

Hello, a very novice question – and i could should be able to work this one out really, but help is needed please. I have a blog running with a bread crum plugin in the header – see web address: http://www.interlude22.co.uk/collective

How do i format this to sit inline with the text and make the text a little bigger. I am guessing this is doen within the css style sheet, however I find that file a real mine field. Any quick pointers would be great, I have been reading up on the css formating over teh last few weeks using the documents on wordpress, still not got the hang of it fully. Any help much appreciated. cheers