body {
    background-color: #000000;
    font-family: Tahoma;
  }
  
  a:link {
    color: #ffffff;
    background-color: #002222;
    text-decoration: underline; 
  }
  a:visited {
    color: #ffffff;
    background-color: #002222;
    text-decoration: underline; 
  }
  a:hover {
    color: #ffffff;
    background-color: #555555;
    text-decoration: underline; 
  }