hn -dark theme css (attempt 2)

@media (prefers-color-scheme: dark) {
  body,td,table#hnmain {
      background: #222222;
      color: #dddddd;
  }

  .pagetop, .admin td, a:link, .admin, .c00, .c00 a:link, .cdd, .cdd a:link, .cdd a:visited, .pagetop a:visited {
      color: #dddddd;
  }
}