Errors:
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Bad value “lang=” for attribute “lang” on element “html”: The language subtag “lang=” is not a valid language subtag.
Attribute “en-us"” not allowed on element “html” at this point.
Attribute “"” not allowed on element “html” at this point.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “nav-features-dropdown”.
Duplicate ID “nav-support-dropdown”.
Stray end tag “a”.
Attribute “min” not allowed on element “input” at this point.
Attribute “max” not allowed on element “input” at this point.
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
No “p” element in scope but a “p” end tag seen.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Bad value “100%” for attribute “height” on element “iframe”: Expected a digit but saw “%” instead.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
Stray end tag “div”.
Warnings:
Attribute “en-us"” is not serializable as XML 1.0.
Attribute “"” is not serializable as XML 1.0.
Consider avoiding viewport values that prevent users from resizing documents.
The first occurrence of ID “nav-features-dropdown” was here.
The first occurrence of ID “nav-support-dropdown” was here.
The “button” role is unnecessary for element “button”.
This document appears to be written in English but the “html” start tag has “lang="lang="”. Consider using “lang="en"” (or variant) instead.
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