You can easily see what styles are applying to an element. If using Chrome, right click on the link and choose Inspect Element. It will show you the HTML of the element and the CSS that applies to it, and where those styles are in your style sheet.
You can also do the same in Opera, Safari, and in Firefox by downloading the Firebug plugin.
If you are having problems, feel free to post a link to your site and we can check for you.