Descargarcapitulos.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
The “complementary” role is unnecessary for element “aside”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “contentinfo” role is unnecessary for element “footer”.
This document appears to be written in English but the “html” start tag has “lang="es"”. Consider using “lang="en"” (or variant) instead.
Errors:
Attribute “on” not allowed on element “button” at this point.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
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