body {
  font-family: Arial, sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  line-height: 1.6;
  background: #f5f5f5;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

h1 {
  color: #2c3e50;
}

section {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
}