Uchi.ru W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
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.
Duplicate ID “header_reg”.
Element “nobr” not allowed as child of element “h1” in this context. (Suppressing further errors from this subtree.)
Attribute “alt” not allowed on element “a” at this point.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The first occurrence of ID “header_reg” was here.
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).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
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