Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
“=” at the start of an unquoted attribute value. Probable cause: Stray duplicate equals sign.
“"” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “sống"” not allowed on element “a” at this point.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
End tag “article” seen, but there were open elements.
Unclosed element “header”.
Stray end tag “header”.
Bad value “https://image.vtcns.com/files/qc/2017/11/21/banner vtc-01.jpg” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “https://image.vtcns.com/files/qc/2017/11/16/banner iphone8 300x250-03.jpg” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “https://image.vtcns.com/files/qc/2017/10/31/bao VNN + VTC.jpg” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Element “p” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
The element “header” must not appear as a descendant of the “header” element.
Element “ul” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
End tag “div” seen, but there were open elements.
Unclosed element “ul”.
End tag “figure” seen, but there were open elements.
Unclosed element “span”.
No “p” element in scope but a “p” end tag seen.
Stray end tag “div”.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
The text content of element “script” was not in the required format: Expected space, tab, newline, or slash but found “{” instead.
Bad value “//adnetwork.adasiaholdings.com/ac?
jump=1&nwid=2060&siteid=175012&pgname=vn_vtc.vn_outstream&fmtid=44269&visit=m&tmstp=
[timestamp]&out=nonrich” for attribute “href” on element “a”: Tab, new line or carriage return found.
Bad value “//adnetwork.adasiaholdings.com/ac?
out=nonrich&nwid=2060&siteid=175012&pgname=vn_vtc.vn_outstream&fmtid=44269&visit=m&tmstp=
[timestamp]” for attribute “src” on element “img”: Tab, new line or carriage return found.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Attribute “sống"” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Text run is not in Unicode Normalization Form C.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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