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.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “overlay”.
Attribute “alt” not allowed on element “input” at this point.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
Duplicate ID “feed-actions-inner”.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Bad value “http://www.flickr.com/photos/nationalnow/sets target=” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Attribute “_blank""” not allowed on element “a” at this point.
End tag “div” seen, but there were open elements.
Unclosed element “footer”.
Stray end tag “footer”.
Stray end tag “div”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “overlay” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “feed-actions-inner” was here.
The “contentinfo” role is unnecessary for element “footer”.
Attribute “_blank""” is not serializable as XML 1.0.
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