body {
  color: black;
  background: white;
  font-family: Arial, Helvetica, sans-serif;
}
body a:visited { color: purple; }
h1 {
  font-size: 175%;
  font-weight: bold;
}
h2 {
  font-size: 125%;
  font-weight: bold;
}
h3 {
  font-size: 100%;
  font-weight: bold;
}
.white { color: white; }
.white a:visited { color: yellow;  }
.white a { color: white;  }