:root {
  color-scheme: light dark;
  --color-bg: light-dark(white, black);
  --color-fg: light-dark(hsl(0, 0%, 15%), hsl(0, 0%, 85%));
  --color-25: hsl(from var(--color-fg) h s 25%);
}

@media (prefers-color-scheme: light) {
  .lightInvert {
    filter: invert();
  }
}

::selection {
  background-color: var(--color-fg);
  color: var(--color-bg);
}

html {
  background-color: var(--color-bg);
  color: var(--color-fg);
  font-size: 14pt;
  line-height: 1.6;
}

body,
article {
  margin: 2em auto;
  padding: 0em 2em;
}

body {
  max-width: 800px;
}

article {
  border: 1px solid var(--color-25);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: monospace;
  line-height: 1.2;
}

p {
  font-family: sans-serif;
}

img {
  max-width: 100%;
}

hr {
  border: none;
  border-top: 1px solid var(--color-25);
}