Erpfocus.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
The “button” role is unnecessary for element “button”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Errors:
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “locale” not allowed on element “a” at this point.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “article” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The element “button” must not appear as a descendant of the “a” element.
Attribute “for” not allowed on element “button” at this point.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
The “for” attribute of the “label” element must refer to a non-hidden form control.
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