:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  color: #222;
  background: #fff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.65;
}

main {
  width: min(760px, calc(100% - 2rem));
  margin: 3rem auto;
  padding: clamp(1.5rem, 5vw, 3.5rem);
  background: #fff;
}

h1,
h2 {
  line-height: 1.25;
}

h1 {
  margin-top: 0;
  font-size: clamp(2rem, 6vw, 3rem);
}

h2 {
  margin-top: 2rem;
  font-size: 1.2rem;
}

p,
li {
  color: #444;
}

.updated {
  color: #666;
  font-size: 0.9rem;
}

a {
  color: #9b3321;
}

.back {
  display: inline-block;
  margin-top: 2rem;
}

@media (max-width: 520px) {
  main {
    width: 100%;
    margin: 0;
    border: 0;
    border-radius: 0;
  }
}