Errors:
Duplicate attribute “prefix”.
Duplicate attribute “xmlns:fb”.
Attribute “xmlns:fb” not allowed here.
Attribute “opti-skip-move” not allowed on element “script” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “flag_showhide_menu”.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “valign” attribute on the “td” element is obsolete. Use CSS instead.
The “border” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Table column 2 established by element “td” has no cells beginning in it.
The element “button” must not appear as a descendant of the “a” element.
Bad value “true” for attribute “async” on element “script”.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “banner” role is unnecessary for element “header”.
The first occurrence of ID “flag_showhide_menu” was here.
The “contentinfo” role is unnecessary for element “footer”.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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