@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
        }
}