body { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.6; color: #333; max-width: 800px; margin: 0 auto; padding: 20px; } h1 { color: #2c3e50; font-size: 2.5em; text-align: center; border-bottom: 2px solid #3498db; padding-bottom: 10px; } h2 { color: #2980b9; font-size: 1.8em; margi…