Designobserver.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Saw “'” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “'” not allowed on element “div” at this point.
End tag “a” violates nesting rules.
No “i” element in scope but a “i” end tag seen.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “/feature/50-books-|-50-covers-of-2017-call-for-entries/39719/” for attribute “href” on element “a”: Illegal character in path segment: “|” is not allowed.
The “center” element is obsolete. Use CSS instead.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Unclosed element “section”.
Stray end tag “section”.
End tag “section” seen, but there were open elements.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Attribute “'” is not serializable as XML 1.0.
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