Perkspot.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
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 “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “homepage” for attribute “rel” on element “a”: The string “homepage” is not a registered keyword.
End tag “footer” seen, but there were open elements.
Unclosed element “div”.
No space between attributes.
Stray start tag “span”.
Stray end tag “span”.
Element “option” without attribute “label” must not be empty.
Duplicate attribute “tabindex”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “navigation” role is unnecessary for element “nav”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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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