body { font-family: Arial, sans-serif; line-height: 1.6; margin: 20px; background-color: #f9f9f9; color: #333; } h1, h2, h3 { color: #2c3e50; } a { color: #2980b9; text-decoration: none; } a:hover { text-decoration: underline; } .toc { background-color: #ecf0f1; padding: 15px; border-radius: 5px; ma…