Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.
The “width” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Bad value “” for attribute “alt” on element “input”: Must not be empty.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
No space between attributes.
The “align” attribute on the “table” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
Element “p” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “european” not allowed on element “a” at this point.
Attribute “forum” not allowed on element “a” at this point.
Attribute “on” not allowed on element “a” at this point.
Attribute “clean” not allowed on element “a” at this point.
Attribute “energy” not allowed on element “a” at this point.
Attribute “for” not allowed on element “a” at this point.
Attribute “islands",” not allowed on element “a” at this point.
Attribute “στη” not allowed on element “a” at this point.
Attribute “Νάξο” not allowed on element “a” at this point.
Attribute “9-11” not allowed on element “a” at this point.
Attribute “Ιουλίου” not allowed on element “a” at this point.
Attribute “2018"” not allowed on element “a” at this point.
No “p” element in scope but a “p” end tag seen.
Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
Attribute “islands",” is not serializable as XML 1.0.
Attribute “9-11” is not serializable as XML 1.0.
Attribute “2018"” is not serializable as XML 1.0.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
This document appears to be written in Greek. Consider adding “lang="el"” (or variant) to the “html” start tag.
Greece GR