body {
  margin: 0;
  padding: 0;
  background: #1e1e1e;
  color: #f0f0f0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  text-align: center;
}

h1 {
  font-size: 3em;
  margin-bottom: 0.5em;
}