Itgetsbetter.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “” for attribute “media” on element “link”: Media query ended prematurely.
Stray end tag “link”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Attribute “autocorrect” not allowed on element “input” at this point.
Attribute “autocapitalize” not allowed on element “input” at this point.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “id”.
Element “ul” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Stray end tag “svg”.
Warnings:
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
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 “contentinfo” role is unnecessary for element “footer”.
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