Adventure.com 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.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Element “h1” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “(max-width: 1920) 100vw, 1920” for attribute “sizes” on element “img”: Bad media condition: Non-zero lengths require a unit at “(max-width: 1920) 100vw,”.
Duplicate ID “searchform”.
Duplicate ID “s”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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).
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The value of attribute “src” on element “img” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The first occurrence of ID “searchform” was here.
The first occurrence of ID “s” was here.
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