Warnings:
Documents should not use “about:legacy-compat”, except if generated by legacy systems that can't output the standard “<!DOCTYPE html>” doctype.
Consider avoiding viewport values that prevent users from resizing documents.
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
The “type” attribute is unnecessary for JavaScript resources.
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.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Attribute “xmlns:fb” not allowed here.
Bad value “true” for attribute “async” on element “script”.
Attribute “from-cache” not allowed on element “div” at this point.
Attribute “media-type” not allowed on element “source” at this point.
Stray end tag “source”.
Attribute “media-type” not allowed on element “img” at this point.
Bad value “true” for attribute “loop” on element “video”.
Bad value “true” for attribute “muted” on element “video”.
Bad value “true” for attribute “autoplay” on element “video”.
Bad value “true” for attribute “playsinline” on element “video”.
Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)
Bad value “username” for attribute “autocomplete” on element “input”: The autofill field name “username” is not allowed in this context.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “img” is missing required attribute “src”.
Russian Federation RU