a:link {
    color: red;
}

a:visited {
    color: green;
}

a:hover {
    color: hotpink;
}

a:active {
    color: blue;
}

body {
  background-color: #222;
  color: #ddd;
  font-family: monospace;
}

h1 {
  margin: 6px;
}

input,
button {
  background-color: #333;
  color: #eee;
  padding: 6px;
  width: 500px;
  border: 1px solid #555;
  margin: 6px;
}

hr {
  background-color: #666;
  height: 1px;
  border: 0;
}