body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: system-ui, sans-serif;
  background: #f6f4ef;
  color: #222;
}
main { text-align: center; padding: 2rem; }
h1 { font-size: 3rem; margin: 0 0 .5rem; }