Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
A document must not include more than one “meta” element with a “http-equiv” attribute whose value is “content-type”.
A slash was not immediately followed by “>”.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Duplicate attribute “0""”.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Attribute “www.googletagmanager.com” not allowed on element “iframe” at this point.
Attribute “ns.html?id” not allowed on element “iframe” at this point.
Bad value “” for attribute “height” on element “iframe”: The empty string is not a valid non-negative integer.
Attribute “0""” not allowed on element “iframe” at this point.
Bad value “” for attribute “width” on element “iframe”: The empty string is not a valid non-negative integer.
Attribute “display:none;visibility:hidden""” not allowed on element “iframe” at this point.
Stray end tag “a”.
Element “p” not allowed as child of element “span” 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 “h4” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “alt” not allowed on element “li” at this point.
Duplicate ID “newsemail”.
Stray start tag “script”.
The “for” attribute of the “label” element must refer to a non-hidden form control.
Warnings:
Attribute “ns.html?id” is not serializable as XML 1.0.
Attribute “0""” is not serializable as XML 1.0.
Attribute “display:none;visibility:hidden""” is not serializable as XML 1.0.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The first occurrence of ID “newsemail” was here.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
This document appears to be written in Greek. Consider adding “lang="el"” (or variant) to the “html” start tag.
Greece GR