Gs1ru.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
Attribute “type” not allowed on element “div” at this point.
Bad value “button” for attribute “type” on element “a”: Subtype missing.
An element with “role=menuitem” must be contained in, or owned by, an element with “role=menubar” or “role=menu”.
Start tag “a” seen but an element of the same type was already open.
End tag “a” violates nesting rules.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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