@media (prefers-color-scheme: light){
  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
  }
}