Errors:
Bad value “ua” for attribute “lang” on element “html”: The language subtag “ua” is not a valid ISO language part of a language tag.
Stray start tag “html”.
Attribute “xmlns:fb” not allowed here.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “Last-Modified” for attribute “http-equiv” on element “meta”.
Bad value “Expires” for attribute “http-equiv” on element “meta”.
Bad value “Pragma” for attribute “http-equiv” on element “meta”.
Bad value “Cache-control” for attribute “http-equiv” on element “meta”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “noindex” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “Как себя обманывают студенты украинских универов” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Bad value “5 мыслей с конференции SE 2017, которые должен запомнить каждый стартапер” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Bad value “Золотые мегабайты: как быстрый интернет делает нас богаче” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
Element “noindex” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “complementary” role is unnecessary for element “aside”.
The “contentinfo” role is unnecessary for element “footer”.
This document appears to be written in Russian but the “html” start tag has “lang="ua"”. Consider using “lang="ru"” (or variant) instead.
Ukraine UA