body { font-family: Arial, sans-serif; line-height: 1.6; margin: 20px; background-color: #f4f4f4; } h1 { color: #333; text-align: center; } h2 { color: #007BFF; margin-top: 30px; } h3 { color: #555; } p { margin: 10px 0; } .table-of-contents { background-color: #fff; padding: 15px; border-radius: 5p…