Errors:
Bad value “el_GR” for attribute “lang” on element “html”: The language subtag “el_gr” is not a valid language subtag.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Duplicate ID “clear”.
Duplicate ID “container”.
The “font” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “styles” not allowed on element “div” at this point.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The first occurrence of ID “clear” was here.
The first occurrence of ID “container” was here.
The “article” role is unnecessary for element “article”.
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).
The “contentinfo” role is unnecessary for element “footer”.
Empty heading.
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