Visana.vn W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute for the “style” element is not needed and should be omitted.
The “navigation” role is unnecessary for element “nav”.
This document appears to be written in Vietnamese but the “html” start tag has “lang="en-US"”. Consider using “lang="vi"” (or variant) instead.
Errors:
Bad value “” for attribute “role” on element “header”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “type” not allowed on element “select” at this point.
Element “option” without attribute “label” must not be empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “a”.
Bad value “x-tmpl-mustache” for attribute “type” on element “script”: Subtype missing.
The “aria-labelledby” attribute must point to an element in the same document.
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