html{
    margin:0 auto;
    max-width:80ch;
    padding:0.6em;
    font-family:serif;
    line-height:1.6;
    background:#FFF;
    color:#222
}
h1,h2,h3{
    color:#444
}
img{
    width:100%
}
@media print{
    color:unset
}