Kilotest: Diagnoses of meta invalid violation by HTML element 30 on Cátedra UNESCO Legislación, Sociedad y Patrimonio page

Basics

About the Cátedra UNESCO Legislación, Sociedad y Patrimonio page

About HTML element 30

About the meta invalid issue

Diagnoses

Here is how rule engines diagnose the meta invalid issue for HTML element 30 of the Cátedra UNESCO Legislación, Sociedad y Patrimonio page.

  1. Bad value X-Wix-Application-Instance-Id for attribute http-equiv on element meta.

    Tool: Html Checker API (World Wide Web Consortium)