Kilotest: Diagnoses of ID not unique violation by HTML element 492 on Virtual Science Teachers page

Basics

About the page

About the issue

About the violator

Diagnoses

Here is how rule engines diagnose the ID not unique issue for HTML element 492 of the Virtual Science Teachers page.

  1. Duplicate ID menu-2-1dc86c95.

    Rule engine: Html Checker (World Wide Web Consortium)