Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
A slash was not immediately followed by “>”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “widget” not allowed on element “iframe” at this point.
Attribute “zpopk” not allowed on element “iframe” at this point.
Attribute “661” not allowed on element “iframe” at this point.
Attribute “small” not allowed on element “iframe” at this point.
Attribute “000000” not allowed on element “iframe” at this point.
Attribute “ffffff"” not allowed on element “iframe” 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.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
Warnings:
The “navigation” role is unnecessary for element “nav”.
Attribute “661” is not serializable as XML 1.0.
Attribute “000000” is not serializable as XML 1.0.
Attribute “ffffff"” is not serializable as XML 1.0.
Poland PL