body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}

header {
  background-color: #3f51b5;
  color: white;
  padding: 2rem;
  text-align: center;
}

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

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

section {
  margin-bottom: 2rem;
}

ul {
  list-style: none;
  padding: 0;
}

ul li {
  margin: 0.5rem 0;
}

footer {
  background: #eee;
  text-align: center;
  padding: 1rem;
}