Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
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 “true” for attribute “async” on element “script”.
Bad value “true” for attribute “defer” on element “script”.
Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “name” on element “input”: Must not be empty.
Attribute “type” not allowed on element “iframe” at this point.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “follow” for attribute “rel” on element “a”: The string “follow” is not a registered keyword.
Attribute “xmlns:a” not allowed here.
Attribute “title” not allowed on element “a” at this point.
Attribute “nofollow” not allowed on element “a” at this point.
Element “script” must not have attribute “defer” unless attribute “src” is also specified.
The “for” attribute of the “label” element must refer to a non-hidden form control.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute with the local name “xmlns:a” is not serializable as XML 1.0.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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