body { 
  background-color: #ccffcc;
  font-family: monospace, "Courier New", Courier;
  color: #000000;
  font-size: 14px;
  line-height: 1.6;
}
 h1 { font-size: 250%; }
 h2 { font-size: 175%; }
 h3 { font-size: 150%; }
 h4 { font-size: 120%; }
a {
  color: green;
}
a:hover {
  background-color: cyan;
}