.head, .foot { display: flex; }
.head-ltitle, .foot-left { flex: 1; }
.head-vol, .foot-date { flex: 0 1 auto; text-align: center; }
.head-rtitle, .foot-os { flex: 1; text-align: right; }
// .head-rtitle, .foot-os { text-align: right; }
.Pp { margin: 1ex 0ex; }
.Nd, .Bf, .Op { display: inline; }
.Pa, .Ad { font-style: italic; }
.Ms { font-weight: bold; }
.Bl-diag > dt { font-weight: bold; }
.Nm, .Fl, .Cm, .Ic, .In, .Fd, .Fn,
.Cd { font-weight: bold; font-family: inherit; }

html { font-family: monospace; line-height: 1.25em; }
body { max-width: 80ch; margin: 1em auto; padding: 0 1ch; }
table { border-collapse: collapse; }
.Nm .Nm { padding-right: 1ch; }

body { background:#000; color:#AAA; }
a { color: #DDD }
a:visited { color: #666 }