body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
  line-height: 1.6;
  color: #222;
}

h1, h2 {
  color: #2c3e50;
}

ul {
  margin-left: 1.5em;
}

a {
  color: #3498db;
  text-decoration: none;
}