Gamechanger.io W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “http://www.w3.org/1999/html” for the attribute “xmlns” (only “http://www.w3.org/1999/xhtml” permitted here).
Bad value “cleartype” for attribute “http-equiv” on element “meta”.
The element “button” must not appear as a descendant of the “a” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No space between attributes.
Stray start tag “footer”.
Warnings:
Attribute “xmlns” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
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