Netacad.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “charset” attribute on the “script” element is obsolete.
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute for the “style” element is not needed and should be omitted.
Errors:
Element “script” must not have attribute “charset” unless attribute “src” is also specified.
Duplicate attribute “class”.
Bad value “submit” for attribute “type” on element “a”: Subtype missing.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “noscript” in this context. (Suppressing further errors from this subtree.)
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