Wosu.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “ul” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
The element “header” must not appear as a descendant of the “header” element.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Element “script” must not have attribute “defer” unless attribute “src” is also specified.
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 “li” in this context. (Suppressing further errors from this subtree.)
Text not allowed in element “iframe” in this context.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “button” role is unnecessary for element “button”.
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