body { background-image : url(./imagenes/gif/background.gif);}
a:link {color: #5b5b5b; text-decoration: none}
a:visited {color: #5b5b5b text-decoration: none}
a:hover {color: #a50000; text-decoration: none}
a:active {color: #5b5b5; btext-decoration: none;}