Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “respond-proxy” for attribute “rel” on element “link”: The string “respond-proxy” is not a registered keyword.
Bad value “respond-redirect” for attribute “rel” on element “link”: The string “respond-redirect” is not a registered keyword.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Attribute “data” not allowed on element “use” at this point.
Element “dl” is missing a required child element.
Attribute “data” not allowed on element “span” at this point.
Duplicate ID “Shape”.
Duplicate ID “Ellipse”.
Duplicate ID “Twitter”.
Duplicate ID “Facebook”.
Duplicate ID “Google”.
The element “h2” must not appear as a descendant of the “dt” element.
Attribute “data” not allowed on element “abbr” at this point.
Stray end tag “span”.
Duplicate ID “modulos”.
Attribute “data” not allowed on element “svg” at this point.
Duplicate ID “fwphone”.
Attribute “name” not allowed on element “li” at this point.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “main” role is unnecessary for element “main”.
The first occurrence of ID “Shape” was here.
The first occurrence of ID “Ellipse” was here.
The first occurrence of ID “Twitter” was here.
The first occurrence of ID “Facebook” was here.
The first occurrence of ID “Google” was here.
Potentially bad value “20171203” for attribute “datetime” on element “time”: Year may be mistyped.
Potentially bad value “20171202” for attribute “datetime” on element “time”: Year may be mistyped.
Potentially bad value “20171201” for attribute “datetime” on element “time”: Year may be mistyped.
Potentially bad value “20171130” for attribute “datetime” on element “time”: Year may be mistyped.
The first occurrence of ID “modulos” was here.
The first occurrence of ID “fwphone” was here.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Italy IT