body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f6fa;
  color: #333;
}

header {
  background-color: #0066cc;
  color: white;
  padding: 30px;
  text-align: center;
}

header a {
  color: #fff;
  margin: 0 10px;
  text-decoration: none;
}

section {
  background: white;
  margin: 20px auto;
  padding: 20px;
  max-width: 900px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

h1 {
  color: #fff;
}

h2 {
  color: #0066cc;
}

ul {
  list-style: square;
  padding-left: 20px;
}

footer {
  text-align: center;
  background: #222;
  color: white;
  padding: 15px;
}