Nso.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “height” not allowed on element “input” at this point.
Attribute “alt” not allowed on element “input” at this point.
Bad value “http://old.nso.ru/reestr_is_ir/?str=2 .” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “” for attribute “id” on element “a”: An ID must not be the empty string.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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