Open ezolenko opened 3 months ago
https://html.spec.whatwg.org/#attribute-name-state
"if there is already an attribute on the token with the exact same name, then this is a duplicate-attribute parse error and the new attribute must be removed from the token."
https://html.spec.whatwg.org/#attribute-name-state
"if there is already an attribute on the token with the exact same name, then this is a duplicate-attribute parse error and the new attribute must be removed from the token."