Use a valid lang attribute value

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What is a valid language code?

Valid language codes are either two-letter or three-letter language codes. You can find the list of valid language codes in the ISO 639-1 code list.


For english this would be en:

<html lang="en">
    <!-- content -->

Why is this important?

The language of a page is used by screen readers to speak the content of the page in the correct language.


Checkout the language check for other reasons why the language attribute is important.

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