body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f5f5f5; }
header { background: #333; color: #fff; padding: 40px; text-align: center; }
section { padding: 20px; max-width: 800px; margin: auto; }
h2 { color: #333; }
ul { line-height: 1.6; }