Ucheba.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
Consider avoiding viewport values that prevent users from resizing documents.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The “type” attribute for the “style” element is not needed and should be omitted.
Errors:
Bad value “apple-itouch-icon” for attribute “rel” on element “link”: The string “apple-itouch-icon” is not a registered keyword.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Attribute “placeholder” not allowed on element “select” at this point.
Duplicate attribute “border”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
The “aria-labelledby” attribute must point to an element in the same document.
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