a.link {color: white; text-decoration: none; }
a.visited {color: white; text-decoration: underline; }
a.hover {color: black; text-decoration: underline; }
a.active {color: white; }

a.donkey:link {color: white; text-decoration: underline; }
a.donkey:visited {color: white; text-decoration: underline; }
a.donkey:hover {color: black; text-decoration: underline; }
a.donkey:active {color: white; }


a.horse:link {color: black; text-decoration: underline; }
a.horse:visited {color: black; text-decoration: underline; }
a.horse:hover {color: white; text-decoration: underline; }
a.horse:active {color: black; }

<!--


class="horse"

class="donkey"

<link rel="stylesheet" type="text/css" href="link.css">


// -->