You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
520 B
520 B
lang
The lang prop on the <html> element must have a valid value based on ISO country and language codes.
References
Rule details
This rule takes no arguments.
Succeed
<html lang="en">
<html lang="en-US">
Fail
<html>
<html lang="foo">