Errors:
Saw “<?”. Probable cause: Attempt to use an XML processing instruction in HTML. (XML processing instructions are not supported in HTML.)
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Stray end tag “meta”.
Bad value “##” for attribute “href” on element “a”: Illegal character in fragment: “#” is not allowed.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
The “font” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “true” for attribute “async” on element “script”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
A slash was not immediately followed by “>”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Empty heading.
Attribute “type"text” is not serializable as XML 1.0.
Attribute “css"” is not serializable as XML 1.0.
Poland PL