Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The element “iframe” must not appear as a descendant of the “a” element.
Stray end tag “i”.
Element “p” not allowed as child of element “h4” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “div” not allowed as child of element “h3” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “src” on element “img”: Must be non-empty.
Bad value “” for attribute “src” on element “iframe”: Must be non-empty.
Element “figcaption” not allowed as child of element “div” 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.
Attribute “href” not allowed on element “span” at this point.
Attribute “scale” not allowed on element “img” at this point.
No “li” element in scope but a “li” end tag seen.
Bad value “https://www.facebook.com/tr?id=590111131196226&ev=PageView&noscript=1&cd[domain]=www.nats.aero” for attribute “src” on element “img”: Illegal character in query: “[” is not allowed.
Bad value “https://www.facebook.com/tr?id=590111131196226&ev=GeneralEvent&noscript=1&cd[post_type]=page&cd[content_name]=NATS&cd[domain]=www.nats.aero” for attribute “src” on element “img”: Illegal character in query: “[” is not allowed.
Stray end tag “div”.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Empty heading.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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