Comd.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “asyncsrc” not allowed on element “script” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “alt” not allowed on element “a” at this point.
The element “button” must not appear as a descendant of the “a” element.
End tag “nav” seen, but there were open elements.
Unclosed element “ul”.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Warnings:
This document appears to be written in Russian. Consider adding “lang="ru"” (or variant) to the “html” start tag.
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