@media (prefers-color-scheme: dark) {
  body {
    background: #000
  }
}

body {
  margin: 1em auto;
  max-width: 40em;
  padding: 0 .62em 3.24em;
  font: 1.2em/1.62 sans-serif
}

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

@media print {
  body {
    max-width: none
  }
}