* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #111827;
  color: #f9fafb;
  font-family: Arial, sans-serif;
}

main {
  text-align: center;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 400;
}