body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #ffffff;
  color: #222;
  line-height: 1.6;
}

header {
  background-color: #111;
  color: #fff;
  padding: 2rem 1rem;
  text-align: center;
}

main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 0 1rem;
}

h1, h2 {
  margin-bottom: 0.5rem;
}

ul {
  padding-left: 1.2rem;
}

footer {
  text-align: center;
  padding: 1.5rem 1rem;
  border-top: 1px solid #ddd;
  margin-top: 3rem;
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}