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.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Attribute “aria-selected” not allowed on element “li” at this point.
No “li” element in scope but a “li” end tag seen.
The “align” attribute on the “div” element is obsolete. Use CSS instead.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Attribute “alt” not allowed on element “a” at this point.
Saw “'” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “'” not allowed on element “ul” at this point.
Element “p” not allowed as child of element “ul” 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The “width” attribute on the “td” element is obsolete. Use CSS instead.
Stray end tag “i”.
Element “object” is missing one or more of the following attributes: “data”, “type”.
The “codebase” attribute on the “object” element is obsolete. Use the “data” and “type” attributes to invoke plugins. To set a parameter with the name “codebase”, use the “param” element.
Duplicate ID “videoplayer”.
Bad value “http://moit.gov.vn/documents/20182/504330/03361221112017_TT Hai pbieu.jpg” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Duplicate ID “doc-form”.
Duplicate ID “menudocid”.
Duplicate ID “menungangid”.
Bad value “tel:(04) 22202210” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Bad value “tel:(04) 22202525” for attribute “href” on element “a”: Illegal character in scheme data: space is not allowed.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “navigation” role is unnecessary for element “nav”.
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.
Attribute “'” is not serializable as XML 1.0.
The first occurrence of ID “videoplayer” was here.
The first occurrence of ID “doc-form” was here.
The first occurrence of ID “menudocid” was here.
The first occurrence of ID “menungangid” was here.
Viet Nam VN