body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; max-width: 800px; margin: 0 auto; padding: 20px; line-height: 1.6; color: #333; } h1, h2, h3 { color: #1a1a1a; } table { width: 100%; border-collapse: collapse; margin: 20px 0; } th, td { border: 1px solid #ddd; padding: 8px; text-align: left; } th { background-color: #f2f2f2; } img { max-width: 100%; height: auto; } a { color: #0066cc; } @media (max-width: 600px) { body { padding: 10px; } table { font-size: 14px; } }