body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #0f172a;
  color: #e5e7eb;
}

header {
  background: #020617;
  padding: 15px;
}

nav a {
  color: #38bdf8;
  margin-right: 15px;
  text-decoration: none;
}

.hero {
  padding: 60px;
  text-align: center;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #38bdf8;
  color: black;
  text-decoration: none;
  border-radius: 6px;
}