Zhang Zeng'an is a Chinese author of computer books, though limited public information is available about him. What can be confirmed is that he has written two works: HTML5+CSS3 Web Front-End Development Technology and its second edition. Both books center on HTML5 and CSS3, the two core technologies of web front-end development, and are aimed at learners in programming design and general computing. Their content focuses on the fundamentals and practical application of front-end development. Judging from the subject matter, Zhang's writing concentrates on introducing and advancing specific technologies, making his books typical technical tutorials suitable for readers who wish to systematically learn web structure and styling. The appearance of a second edition suggests that the first edition found a readership, prompting the author to update and refine the content. Overall, Zhang Zeng'an's main writing focus is web front-end development technology, and his works offer some reference value for basic computer teaching and self-study. However, owing to limited public information, further details about his personal background and academic experience cannot be provided.
