body {
  margin: 0;
  font-family: Courier, Fixed;
  font-size: 62.5%;
  color: #999;
  background-color: #000;
  }
a {
  color: #fff;
  text-decoration: none;
  }
a:hover {
  color: #000;
  background-color: #fff;
  }
h1 {
  font-size: 4em;
  text-align: center;
  }
h2 {
  font-size: 2.5em;
  }
h3 {
  text-decoration: underline;
  font-size: 1.8em;
  margin-left: 50px;
  letter-spacing: 1px;
  color: #f00;
  }
h4 {
  font-size: 1.2em;
  margin-left: 15px;
  }
div.footer {
  position: fixed;
  bottom: 5px;
  padding: 0;
  text-align: center;
  letter-spacing: 1px;
  font-size: 1.3em;
  width: 100%;
  border-top: 1px solid #333;
  }
div.footer a {
  color: #900;
  text-decoration: none;
  }
div.footer a:hover {
  color: #600;
  background-color: #eee;
  text-decoration: none;
  }
p {
  margin-left: 15px;
  color: #999;
  font-size: 1.0em;
  }
  
p.sub {
  margin-left: 50px;
  color: #999;
  font-size: 1.0em;
  }