Mudu.tv W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “cn” for attribute “lang” on element “html”: The language subtag “cn” is not a valid ISO language part of a language tag.
Bad value “true” for attribute “muted” on element “video”.
No “p” element in scope but a “p” end tag seen.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute value missing.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Attribute “name” not allowed on element “div” at this point.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Warnings:
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in Simplified Chinese but the “html” start tag has “lang="cn"”. Consider using “lang="zh-hans"” (or variant) instead.
China CN