HTTP header and html lang

Test passes if you see green below, and no message to ignore it.

This test is only valid if the user agent recognises the HTTP and html lang declarations, and :lang works.

Ignore this test. (:lang not supported) 

Assertion: If there is a conflict between the language declarations in the HTTP header and the html element using lang, the UA will recognize the language declared in the html element.

Notes:

Red means the HTTP had precedence.

Next test
HTML5

language-declarations-009
Result summary & related tests