Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
A numeric character reference expanded to the C1 controls range.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “/interactive.html"” for attribute “href” on element “a”: Illegal character in path segment: “"” is not allowed.
Element “noindex” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “0” for attribute “allowfullscreen” on element “iframe”.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Element “ul” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
End tag “div” seen, but there were open elements.
Unclosed element “span”.
Element “noindex” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
No space between attributes.
Unclosed element “section”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
This document appears to be written in Russian. Consider adding “lang="ru"” (or variant) to the “html” start tag.
Ukraine UA