body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #121416;
  color: #e6e8ea;
  font:
    16px/1.5 system-ui,
    sans-serif;
}
main {
  max-width: 28rem;
  padding: 2rem;
}
h1 {
  font-size: 1.4rem;
}