plurilingual web-page with english dominant ; What to declare ?

Hi,
The W3 validator indicates for *https://www.archaeometry.org*

1.*Warning*: This document appears to be written in French but the 
|html| start tag has |lang="en"|. Consider using |lang="fr"| (or 
variant) instead.

 From line 1, column 16; to line 2, column 16

|TYPE html>|*↩*|*<html lang="en">*||<head>|

|I do not understand this warning as the target audience is english 
speaking.
My plurilingual web-site contains ALSO pages in
French, German, Spanish, Chinese, Catalan, Portuguese...
What should I do ?|

|Thanks in advance for your advices

Best
Leo
dubal@archaeometry.org

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Received on Saturday, 11 September 2021 13:12:30 UTC