Chwilowo.pl 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.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Attribute “href” not allowed on element “span” at this point.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “div” at this point.
Element “h4” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Stray end tag “strong”.
Warnings:
Attribute “"” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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