body {
  max-width: 740px;
}

h1 > a,
h2 > a,
h3 > a,
h4 > a,
h5 > a,
h6 > a {
  text-decoration: none;
}

h1 > a:hover,
h2 > a:hover,
h3 > a:hover,
h4 > a:hover,
h5 > a:hover,
h6 > a:hover {
  text-decoration: underline;
}

.separator {
  border-bottom: 0.125em solid;
  margin-bottom: 2em;
  margin-top: 2em;
  width: 4em;
}