Nexthink.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “utf-8"” not allowed on element “meta” at this point.
Bad value “text/html; charset=” for attribute “content” on element “meta”: The empty string is not a valid character encoding name.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “a”.
Duplicate ID “microsoft”.
Stray start tag “link”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
Attribute “utf-8"” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “microsoft” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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