<!DOCTYPE html> <html> <head> <title>Thông tin tài khoản</title> <style> body { background-color: #1E90FF; } .account-info { background-color: white; border: 1px solid black; padding: 10px; margin-bottom: 10px; } .account-info h2 { margin-top: 0; } .account-info p { margin: 0; padding: 5px; border: 1px solid black; } .copy-button { margin-left: 10px; } </style> </head> <body> ...