body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  color: #333;
}

.hero {
  background: #222;
  color: #fff;
  text-align: center;
  padding: 80px 20px;
}

.subtitle {
  margin-top: -10px;
  opacity: 0.8;
}

.section {
  padding: 40px 20px;
  max-width: 800px;
  margin: auto;
}

ul {
  text-align: left;
  display: inline-block;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background: #0070f3;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  margin-top: 20px;
}