Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Element “meta” is missing one or more of the following attributes: “content”, “property”.
Element “meta” is missing required attribute “content”.
Element “meta” is missing one or more of the following attributes: “charset”, “content”, “http-equiv”, “itemprop”, “name”, “property”.
Element “img” is missing required attribute “src”.
Element “p” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Element “ul” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
Attribute “href” not allowed on element “button” at this point.
Bad value “auto” for attribute “width” on element “img”: Expected a digit but saw “a” instead.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Empty heading.
This document appears to be written in Italian. Consider adding “lang="it"” (or variant) to the “html” start tag.
Italy IT