:root {
  --color_background: #fff;
  --color_text_primary: #000;
  --color_link: blue;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color_background: #19191a;
    --color_text_primary: #fff;
    --color_link: cornflowerblue;
  }
}

body {
  margin: 0;
  padding: 1em;
  line-height: 1.5;
  font-size: 1.1em;
  font-family: Georgia, serif;;
  color: var(--color_text_primary);
  background-color: var(--color_background);
  max-width: 1000px;
}

a {
  color: var(--color_link);
}

li {
  margin: 0.5em 0;
}

ol {
  counter-reset: section;
  list-style-type: none;
}

ol > li::before {
  counter-increment: section;
  content: counters(section, ".") ". ";
}

table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  margin: 1em 0;
  border: 1px solid var(--color_text_primary);
}

table td {
  padding: 1em;
  border: 1px solid var(--color_text_primary);
  vertical-align: top;
}

table td p {
  margin: 0;
}