Themystica.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.
Bad value “” for attribute “aria-controls” on element “button”: An IDREFS value must contain at least one non-whitespace character.
The “center” element is obsolete. Use CSS instead.
The “align” attribute on the “hr” element is obsolete. Use CSS instead.
Bad value “no follow” for attribute “rel” on element “a”: The string “no” is not a registered keyword.
Attribute “alt” not allowed on element “a” at this point.
Warnings:
The “banner” role is unnecessary for element “header”.
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.
The “complementary” role is unnecessary for element “aside”.
The “contentinfo” role is unnecessary for element “footer”.
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