body {
  margin: 40px auto;
  max-width: 650px;
  line-height: 1.6;
  font-size: 18px;
  color: #333;
  padding: 0 10px;
  font-family: sans;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

a {
  text-decoration: underline;
  color: #555
}

h2, h3, h4 {
  margin-left: 0.5rem;
}

p, ul {
  margin-left: 0.7rem;
}



#postamble {
  margin-top: 2rem;
  font-size: 0.7rem;
  color: #555;

}