Akvo.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Bad value “https://theeventscalendar.com/” for attribute “rel” on element “link”: The string “https://theeventscalendar.com/” is not a registered keyword.
Duplicate attribute “class”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Text not allowed in element “iframe” in this context.
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “aboutAkvo hidden” for attribute “id” on element “section”: An ID must not contain whitespace.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
The “banner” role is unnecessary for element “header”.
Empty heading.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “contentinfo” role is unnecessary for element “footer”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
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