You can target link styles in specific divs/tags using compound CSS styles. For example, say your footer has the CSS ID of #footer. You can target all anchor (link tags) in the footer by using a style like;
Code:
#footer a {styles here}
You can take this further still by targeting the link pseudo classes in the footer as well;
Code:
#footer a:link {styles here}
#footer a:visited {styles here}
#footer a:hover {styles here}
#footer a:active {styles here}
This will target the link styles in the #footer only.
NB: the pseudo classes MUST run in that order; link, visited, hover, active or they won't have the desired affect.
You can also style a:focus but don't wipe it out all together for the sake of vanity. Remember that not everyone uses a mouse to surf a website so focus is the guide when tabbing through links using a keyboard.
Here is a better description of it all from W3 Schools; CSS Pseudo-classes
Enjoy