body {
  color: #1a1a1a;
  font-family: -apple-system, system-ui, sans-serif;
  line-height: 1.6;
  margin: 2em auto;
  max-width: 760px;
  padding: 0 1em;
}

h1,
h2 {
  border-bottom: 1px solid #eee;
  padding-bottom: .3em;
}

dt {
  font-weight: 600;
  margin-top: .8em;
}

dd {
  color: #444;
  margin-left: 0;
}

footer {
  display: flex;
  flex-wrap: wrap;
  gap: .45em .9em;
  border-top: 1px solid #eee;
  color: #888;
  font-size: .9em;
  margin-top: 4em;
  padding-top: 1em;
}