body {
  max-width: 640px;
  margin: 60px auto;
  font-family: Georgia, serif;
  line-height: 1.6;
  color: #111;
  padding: 0 20px;
}

h1 {
  font-size: 2.2em;
  margin-bottom: 0.4em;
}

h2 {
  margin-top: 2em;
  font-size: 1.4em;
}

ul {
  margin-left: 20px;
}

em {
  color: #333;
}