Informaticando.net W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Attribute “content” not allowed on element “time” at this point.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Attribute “runat” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
Character reference was not terminated by a semicolon.
Character reference expands to a control character (U+0002).
Warnings:
This document appears to be written in Italian but the “html” start tag has “lang="en"”. Consider using “lang="it"” (or variant) instead.
Italy IT