body {
  margin: 0 auto;
  max-width: 45em;

  font-family: "SF Pro Display", "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  font-size: 21px;

  line-height: 1.5;
  padding: 4em 1em;

  background-color: rgb(255, 255, 255);
  color: rgb(29, 29, 31);
}

section {
  padding: 1em;
}

section.bordered {
  background-color: rgb(245, 245, 247);
  color: rgb(110, 110, 115);
  border-radius: 12px;
}

a {
  color: #06C;
  text-decoration: none;
}

h1, h2 {
  display: none;
}

ul.footer {
  list-style: none;
  margin: 0;
  padding: 0;
}