Oma.by W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “"” is not serializable as XML 1.0.
This document appears to be written in Russian but the “html” start tag has “lang="en"”. Consider using “lang="ru"” (or variant) instead.
Errors:
Bad value “text/html; charset='UTF-8'” for attribute “content” on element “meta”: “'utf-8'” is not a valid character encoding name.
Duplicate attribute “type”.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “rel” not allowed on element “div” at this point.
No space between attributes.
End tag “a” violates nesting rules.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “img” at this point.
No “p” element in scope but a “p” end tag seen.
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