Recept-duhovka.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “og:http://ogp.me/ns# website:http://ogp.me/ns/website# article:http://ogp.me/ns/article# profile:http://ogp.me/ns/profile# fb:http://ogp.me/ns/fb#” for attribute “prefix” on element “html”.
Bad value “Cache-Control” for attribute “http-equiv” on element “meta”.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Attribute “0” not allowed on element “img” at this point.
Attribute “content” not allowed on element “span” at this point.
Duplicate ID “last-comments”.
Warnings:
Attribute “0” is not serializable as XML 1.0.
The first occurrence of ID “last-comments” was here.
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