body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  color: #1a1a1a;
  line-height: 1.6;
  background: #fafafa;
}
h1 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 4px;
}
h2 {
  font-size: 18px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 6px;
}
p {
  font-size: 15px;
  margin: 0 0 12px;
}
.meta {
  font-size: 13px;
  color: #777;
  margin-bottom: 20px;
}
.intro {
  margin-bottom: 24px;
}
.error {
  color: #b00020;
}
a {
  color: #3b5bdb;
}
nav {
  margin-bottom: 24px;
  font-size: 14px;
}
nav a {
  margin-right: 16px;
}