How can I add space between anchor tags?

I want to give my anchor tags some elbow room. I tried to add both padding and margin, and neither one work (even when I give them a lot, as you can see here):

a {
    line-height: 1em;
    display: inline-block;
    text-decoration: none;
    padding: 120;
    margin: 42;
}

How can I add some spacing between the anchor elements?

The entire kit and kaboodle are here: http://jsfiddle.net/clayshannon/pRgQL/

I ended up going with this: http://jsfiddle.net/clayshannon/pRgQL/18/