Achievers.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Stray end tag “a”.
Bad value “wp-video-lightbox” for attribute “rel” on element “a”: The string “wp-video-lightbox” is not a registered keyword.
Bad value “http://www.youtube.com/watch?v=drW5CwZ7KyY&width=100%&height=100%” for attribute “href” on element “a”: Percentage ("%") is not followed by two hexadecimal digits.
Bad value “http://www.youtube.com/watch?v=ijzUtpmit3w&width=100%&height=100%” for attribute “href” on element “a”: Percentage ("%") is not followed by two hexadecimal digits.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “aria-controls” attribute must point to an element in the same document.
Warnings:
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “contentinfo” role is unnecessary for element “footer”.
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