body {
  margin: 0;
  display: grid;
  place-items: center;
  background: #f5f5f5;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, avenir next, avenir, segoe ui, helvetica neue, helvetica, Cantarell, Ubuntu, roboto, noto, arial, sans-serif;
  font-size: 1.5rem;
  line-height: 1.5;
}

main {
  max-width: 60ch;
  padding: 1rem;
}