Overriding link styles?

Hello!

A few infos first. I’m using the latest WordPress, my client’s site is in localhost so I can’t show it to you, and I am using a child theme of the 2012 theme.

So: I want to have a menu at the right hand side of the page. I could go to “Widgets” and enable the custom menu. But the menu I’m doing for my client is quite complex, and it would be even more complicated using this menu widget. So I decided I’ll do it with the “Text” widget, where I can also insert HTML, because basically every link has a different size and a different colour.

Alright, now comes the problem. In the style.css file of my child-theme, I inserted all needed stuff that should make the menu look the way it should look. But it doesn’t work, because it seems like this won’t override WordPress’ default settings for links.

I do not want to change any of the settings for links, however. It’s really just for this menu I’m doing. All other links should stay the way they are.

Does anyone have an idea how I could do this? It doesn’t seem to be really easy. I don’t get why it won’t override the default settings…

All help is appreciated!
Mr. DeeGee (DG, Default Gravatar)