Errors:
Attribute “xmlns:fb” not allowed here.
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.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Element “style” not allowed as child of element “body” 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.)
Heading cannot be a child of another heading.
End tag “li” seen, but there were open elements.
Unclosed element “h2”.
Element “div” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Bad value “true” for attribute “allowfullscreen” on element “iframe”.
Bad value “100%” for attribute “width” on element “iframe”: Expected a digit but saw “%” instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Attribute “align” not allowed on element “a” at this point.
Element “startsv” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “p” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “https://www.facebook.com/tr?ev=6028861474420&cd[value]=0.00&cd[currency]=VND&noscript=1” for attribute “src” on element “img”: Illegal character in query: “[” is not allowed.
Warnings:
Attribute with the local name “xmlns:fb” is not serializable as XML 1.0.
Empty heading.
This document appears to be written in Vietnamese but the “html” start tag has “lang="en-US"”. Consider using “lang="vi"” (or variant) instead.
Viet Nam VN