Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Attribute “addthis:url” is not serializable as XML 1.0.
Attribute “addthis:id” is not serializable as XML 1.0.
Attribute “addthis:title” is not serializable as XML 1.0.
Attribute “addthis:description” is not serializable as XML 1.0.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Attribute “57” is not serializable as XML 1.0.
This document appears to be written in Italian. Consider adding “lang="it"” (or variant) to the “html” start tag.
Errors:
Attribute “ntt-id” not allowed on element “li” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “addthis:url” not allowed on element “div” at this point.
Attribute “addthis:id” not allowed on element “div” at this point.
Attribute “addthis:title” not allowed on element “div” at this point.
Attribute “addthis:description” not allowed on element “div” at this point.
Attribute “57” not allowed on element “img” at this point.
Italy IT