txtdot/static/common.css

* {
  box-sizing: border-box;
}

:root {
  --bg: #fff;
  --fg: #111;

  --link: hsl(207, 100%, 40%);
  --link-hl: hsl(207, 100%, 20%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #222;
    --fg: #eee;

    --link: hsl(207, 100%, 60%);
    --link-hl: hsl(207, 100%, 80%);
  }
}

body {
  margin: 0;
  padding: 0.5rem;

  background: var(--bg);
  color: var(--fg);

  font-family: system-ui, sans-serif;
  font-size: 1.1rem;
}

main {
  max-width: 50rem;
  width: 100%;
  margin: auto;
}