body {
 background:black;
 color:#00ff00;
 font-family:courier new;
 text-align:center;
}


h1{
 color:#ffffff;
 text-align:center;
 font-size:70px;
 font-family:courier new;
 background-color:#00ff00;
}

h2{
  color:black;
  background-color:#00ff00;
  font-size:60px;
  font-family:courier new;
}

h3 {
  color:black;
  background-color:#ffffff;
  font-size:40px;
  font-family:courier new;
}

h4 {
  color:#00ff00;
  font-size:38px;
  font-family:courier new;
}

h5 {
  color:#ffffff;
  font-size:34px;
  background-color:#ff0000;
}

h6 {
  color:#00ff00;
  font-size:25px;
}

/* unvisited link */
a:link {
  color: black;
}

/* visited link */
a:visited {
  color: white;
}

/* mouse over link */
a:hover {
  color: red;
}

/* selected link */
a:active {
  color: white;

}