Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Attribute “name” not allowed on element “meta” at this point.
Attribute “value” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “content”, “itemprop”, “property”.
Bad value “main-content seth” for attribute “id” on element “div”: An ID must not contain whitespace.
Duplicate ID “fullslide1”.
Bad value “lightbox[secondary-demo]” for attribute “rel” on element “a”: The string “lightbox[secondary-demo]” is not a registered keyword.
Attribute “credit”” not allowed on element “img” at this point.
Attribute “allow” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “xmlns:v” not allowed here.
Attribute “rel” not allowed on element “div” at this point.
Stray end tag “span”.
Attribute “rel” not allowed on element “img” at this point.
Attribute “rel” not allowed on element “span” at this point.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The first occurrence of ID “fullslide1” was here.
Attribute “credit”” is not serializable as XML 1.0.
Attribute with the local name “xmlns:v” is not serializable as XML 1.0.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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