Add rounded corners to navbar?

[TWood]

I've modified the default style so that the navbar is now floating against a background color and I'd like to make it match the other panels with rounded corners.

https://vborg.vbsupport.ru/external/2011/09/17.png

How would I go about adding the rounded corners to all four corners of the navbar?

(link in sig)

EDIT:

Got it, added to additional.css:

.navtabs {
-moz-border-radius: 5px;
border-radius: 5px;
}