Cidob.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Stray start tag “html”.
A “charset” attribute on a “meta” element found after the first 1024 bytes.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
The element “button” must not appear as a descendant of the “a” element.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
End tag “section” seen, but there were open elements.
Unclosed element “div”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
This document appears to be written in Spanish. Consider adding “lang="es"” (or variant) to the “html” start tag.
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