Eipr.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “ImageToolbar” for attribute “http-equiv” on element “meta”.
Attribute “about” not allowed on element “article” at this point.
Element “source” is missing required attribute “srcset”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “about” not allowed on element “div” at this point.
Attribute “datatype” not allowed on element “span” at this point.
Attribute “content” not allowed on element “span” at this point.
Warnings:
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
Text run is not in Unicode Normalization Form C.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
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