lang="ja" absolutely should work [1], so I have no idea why it doesn't on your website. Maybe it's related to font you specified which may directly or indirect

lang="ja" absolutely should work [1], so I have no idea why it doesn't on your website. Maybe it's related to font you specified which may directly or indirectly (fallback) cause the problem. After all, `font-family` overrides language (which essentially just helps to get the right font(s)). If you don't mind to provide a test page I can help debugging. [1]: https://en.wikipedia.org/wiki/User:Fireattack/sandbox https://en.wikipedia.org/wiki/User:Fireattack/sandbox