body {
  font-family: monospace
}

.err {
  color: red;
}

h1 {
  text-align: center;
  background: #088;
  color: white;
}

h2 {
  color: #088;
}

h1 a {
  color: inherit;
  text-decoration: none;
}

h1 a:hover {
  text-decoration: underline;
  cursor: pointer;
}