body {
  font-family: sans-serif;
  background: #0f172a;
  color: white;
  margin: 0;
  padding: 2rem;
  text-align: center;
}
.hero h1 {
  font-size: 2.5rem;
}
a {
  display: inline-block;
  margin-top: 1rem;
  color: #38bdf8;
  text-decoration: none;
  font-weight: bold;
}