Dotdash.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.
The element “header” must not appear as a descendant of the “header” element.
End tag “a” violates nesting rules.
Stray end tag “a”.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate attribute “class”.
Bad value “210px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Forbidden code point U+0003.
Stray end tag “span”.
Element “legend” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
End of file seen and there were open elements.
Unclosed element “main”.
Unclosed element “div”.
Warnings:
The “main” role is unnecessary for element “main”.
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