Datalab.eu 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 doctype.
Stray start tag “html”.
Stray start tag “head”.
Element “title” not allowed as child of element “strong” in this context. (Suppressing further errors from this subtree.)
Character reference was not terminated by a semicolon.
A numeric character reference expanded to the C1 controls range.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “strong”.
Unclosed element “span”.
Unclosed element “div”.
Stray end tag “strong”.
Attribute “gesture” not allowed on element “iframe” 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The “frameborder” attribute on the “iframe” element is obsolete.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 “alt” not allowed on element “script” at this point.
Bad value “” for attribute “id” on element “div”: An ID must not be the empty string.
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.
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