:root {
  color-scheme: light dark;
  font-family: Arial, Helvetica, sans-serif;
  background: #f6f7f9;
  color: #20242c;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
}

main {
  width: min(720px, calc(100% - 40px));
}

h1 {
  margin: 0 0 16px;
  font-size: 32px;
  font-weight: 700;
}

h2 {
  margin: 32px 0 8px;
  font-size: 18px;
}

p {
  margin: 0 0 12px;
  line-height: 1.55;
}