body {
	margin: 0;
	font-family: "Courier New", Courier, Fixed;
	font-size: 62.5%;
	color: #fff;
	background-color: #000;
  }
a {
  color: #ccc;
  text-decoration: none;
  }
a:hover {
	color: #000;
	background-color: #fff;
	font-family: Arial, Helvetica, sans-serif;
  }
h1 {
  font-size: 4em;
  text-align: center;
  }
h2 {
  font-size: 2.5em;
  }
h3 {
  text-decoration: underline;
  font-size: 1.8em;
  margin-left: 20px;
  letter-spacing: 1px;
  }
h4 {
  font-size: 1.2em;
  margin-left: 15px;
  }