html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  text-align: center;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

h1 {
  margin: 0;
}

footer {
  padding: 20px 0;
  font-size: 14px;
}