html {
  color-scheme: light dark;
}

body {
  font-size: 1.25rem;
  line-height: 1.5;
}

body table tr img {
  width: 500px; !important
  height: auto;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

main {
  max-width: min(70ch, 100% - 4rem);
  margin-inline: auto;
}
~