Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “//www.w3.org/1999/xhtml” for the attribute “xmlns” (only “http://www.w3.org/1999/xhtml” permitted here).
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “style” not allowed as child of element “section” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “input” element is obsolete. Use CSS instead.
A slash was not immediately followed by “>”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “cmos” not allowed on element “img” at this point.
Attribute “1200tvl” not allowed on element “img” at this point.
Attribute “2.1mm” not allowed on element “img” at this point.
Attribute “lens” not allowed on element “img” at this point.
Attribute “16:9” not allowed on element “img” at this point.
Attribute “4:3” not allowed on element “img” at this point.
Attribute “ntsc” not allowed on element “img” at this point.
Attribute “pal” not allowed on element “img” at this point.
Attribute “fpv” not allowed on element “img” at this point.
Attribute “camera” not allowed on element “img” at this point.
Attribute “with” not allowed on element “img” at this point.
Attribute “vtx” not allowed on element “img” at this point.
Attribute “for” not allowed on element “img” at this point.
Attribute “rc” not allowed on element “img” at this point.
Attribute “drone"” not allowed on element “img” at this point.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
End tag for “body” seen, but there were unclosed elements.
Unclosed element “div”.
Warnings:
Attribute “xmlns” is not serializable as XML 1.0.
The “type” attribute is unnecessary for JavaScript resources.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
The “banner” role is unnecessary for element “header”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Attribute “1200tvl” is not serializable as XML 1.0.
Attribute “2.1mm” is not serializable as XML 1.0.
Attribute “16:9” is not serializable as XML 1.0.
Attribute “4:3” is not serializable as XML 1.0.
Attribute “drone"” is not serializable as XML 1.0.
The “contentinfo” role is unnecessary for element “footer”.
Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.
Ukraine UA