Opmoscow.ru W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Bad value “https://www.facebook.com/tr?id=207773093472214&ev=PageView
&noscript=1” for attribute “src” on element “img”: Tab, new line or carriage return found.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Bad value “100%” for attribute “width” on element “video”: Expected a digit but saw “%” instead.
Element “source” not allowed as child of element “video” in this context. (Suppressing further errors from this subtree.)
Attribute “href” not allowed on element “span” at this point.
Bad value “mailto:info@opmoscow.ru?subject=Сообщение с сайта” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Stray end tag “ul”.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
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