> For the complete documentation index, see [llms.txt](https://zhang-hao-wei.gitbook.io/introduction-to-front-end-design-for-high-school/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://zhang-hao-wei.gitbook.io/introduction-to-front-end-design-for-high-school/master.md).

# 封面

![](/files/Epa3NUWDHsEHxVSRYZ3b)