Vertragsverlängerung (1 issues)

Country specific language "de-DE" might not be necessary
Observation Details

The page uses lang="de-DE" on the <html> element. The specification of the country "DE" might not be necessary. While most assistive technology can fallback to the primary language tag "de" if a different secondary language tag is used on the user's system, removing the secondary tag might be an even more robust implementation.

Remediation Notes

If specifying the country is not necessary, removing it, leaving the primary language tag, is an option.