Hackreactor.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Duplicate attribute “lang”.
Attribute “xmlns:og” not allowed here.
Attribute “xmlns:fb” not allowed here.
Attribute “xmlns:website” not allowed here.
A document must not include more than one “meta” element with a “charset” attribute.
Bad value “https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,600,300italic|Merriweather:300,600” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Duplicate attribute “class”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Attribute with the local name “xmlns:og” is not serializable as XML 1.0.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Attribute with the local name “xmlns:website” is not serializable as XML 1.0.
The “main” role is unnecessary for element “main”.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
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).
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