> For the complete documentation index, see [llms.txt](https://doc.tanmer.cn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.tanmer.cn/qian-duan/css3/flex.md).

# flex

阅读: <http://www.ruanyifeng.com/blog/2015/07/flex-grammar.html>