I’m not 100% sure what is you are trying to achieve, but if it is what I think you are trying to do, then the following should do the trick:
[code:fpvjc69d]#suckerfishnav a { color:##fff; display:block; text-decoration:none; padding:0.25em 2em; }[/code:fpvjc69d]
Although the CSS generator should be able to generate the code anyway so it’s probably easiest to use that instead.