body {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px;
  font-family: system-ui, sans-serif;
  line-height: 1.6;
  color: #1f1610;
  background: #f7f2ea;
}
h1 {
  font-size: 1.6rem;
}
h2 {
  font-size: 1.1rem;
  margin-top: 1.6em;
}
a {
  color: #b07a4e;
}
.back {
  display: inline-block;
  margin-top: 2em;
}