Vtbnpf.ru W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “text/css/opera” for attribute “type” on element “link”: Expected a token character, whitespace or a semicolon but saw “/” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “navigation”.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Bad value “0” for attribute “size” on element “input”: Zero is not a positive integer.
No space between attributes.
Warnings:
The first occurrence of ID “navigation” was here.
This document appears to be written in Russian. Consider adding “lang="ru"” (or variant) to the “html” start tag.
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