body {
  font-family: 'Courier New', monospace;
  background-color: #101010;
  color: #c0c0c0;
  line-height: 1.5;
}
a { color: #0af; }
nav ul { list-style-type: none; }
input { display: block; margin: 5px 0; padding: 5px; width: 200px; }
button { padding: 5px 10px; background: #0af; border: none; color: #101010; }
pre { background: #000; padding: 10px; overflow-x: auto; }