Wlu.edu W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “navigation” for attribute “role” on element “button”.
Attribute “name” not allowed on element “div” at this point.
Bad value “navigation” for attribute “role” on element “ul”.
The “summary” attribute on the “table” element is obsolete. Consider describing the structure of the “table” in a “caption” element or in a “figure” element containing the “table”; or, simplify the structure of the “table” so that no description is needed.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “heading” role is unnecessary for element “h1”.
The “form” role is unnecessary for element “form”.
The “button” role is unnecessary for element “button”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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