Vgoroden.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://fonts.googleapis.com/css?family=PT+Serif:400,400i,700,700i|Roboto:400,500,700,900&subset=cyrillic” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Bad value “true” for attribute “async” on element “script”.
Attribute “banner-id” not allowed on element “div” at this point.
Element “noindex” not allowed as child of element “header” in this context. (Suppressing further errors from this subtree.)
Element “noindex” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
Duplicate attribute “rel”.
The element “button” must not appear as a descendant of the “a” element.
Element “noindex” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “center” element is obsolete. Use CSS instead.
Element “script” must not have attribute “charset” unless attribute “src” is also specified.
End tag “div” seen, but there were open elements.
Unclosed element “span”.
Warnings:
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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