Allegro.tech W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “X-Clacks-Overhead” for attribute “http-equiv” on element “meta”.
Attribute “itemprop” not allowed on element “link” at this point.
Bad value “https://fonts.googleapis.com/css?family=Open+Sans:300,400|Roboto:400,300,100,700&subset=latin-ext” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Element “strong” not allowed as child of element “time” in this context. (Suppressing further errors from this subtree.)
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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