body {
  font-family: system-ui, sans-serif;
  background: #000;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  text-align: center;
}

main {
  max-width: 600px;
  padding: 0 1rem;
}

nav {
  margin-top: 1.5rem;
}

nav a {
  margin: 0 0.75rem;
  text-decoration: none;
  color: #1e90ff;
  font-weight: bold;
}

nav a:hover {
  text-decoration: underline;
}