body {
   background-color: #000000;
 }


a:link { color: #505050; text-decoration:none; }


a:active { color: #ffffff; text-decoration:none; }


a:visited { color: #505050; text-decoration:none; }


a:hover { color: #ffffff; text-decoration:underline; }


img.center {
position: absolute;
left: 50%;
width: 600px;
margin-left: -300px;
top: 50%;
height: 300px;
margin-top: -150px;
}