Code for linking a web.sitemap file to a CSS

I have a sitemap file included in a asp.net masterpage that I want to use CSS to format.  Unfortunately, I'm having some problems getting the web.sitemap file to read the CSS file.  The following is my code for the Web.sitemap file.  Could someone give me the code for getting my document to read the CSS file.  The following is a copy the code I have now.
<?xml version="1.0" encoding="utf-8" ?>
     <siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
          <siteMapNode url="" title="Staff Admin Menu" description="" forecolor="white">
          <siteMapNode url="Default2.aspx" title="> Default2" description=""/>
      &nb ...