While crawling [CSS Snapshot 2023](https://drafts.csswg.org/css-2023/), the following links to other specifications were detected as pointing to non-existing anchors: * [ ] https://drafts.csswg.org/css-fonts-4/#valdef-font-family-fangsong <sub>This issue was detected and reported semi-automatically by [Strudy](https://github.com/w3c/strudy/) based on data collected in [webref](https://github.com/w3c/webref/).</sub>