Errors:
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
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 “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “option” without attribute “label” must not be empty.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “buton” for attribute “type” on element “button”.
Duplicate attribute “phơi”.
Duplicate attribute “in”.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Duplicate attribute “sản”.
Duplicate attribute “phẩm”.
Attribute “giúp” not allowed on element “a” at this point.
Attribute “tiết” not allowed on element “a” at this point.
Attribute “kiệm” not allowed on element “a” at this point.
Attribute “không” not allowed on element “a” at this point.
Attribute “gian” not allowed on element “a” at this point.
Attribute “phơi” not allowed on element “a” at this point.
Attribute “sản” not allowed on element “a” at this point.
Attribute “phẩm” not allowed on element “a” at this point.
Attribute “in” not allowed on element “a” at this point.
Attribute “lụa,” not allowed on element “a” at this point.
Attribute “đc” not allowed on element “a” at this point.
Attribute “số” not allowed on element “a” at this point.
Attribute “lượng” not allowed on element “a” at this point.
Attribute “hàng” not allowed on element “a” at this point.
Attribute “nghìn” not allowed on element “a” at this point.
Attribute “bản” not allowed on element “a” at this point.
Attribute “cùng” not allowed on element “a” at this point.
Attribute “lúc” not allowed on element “a” at this point.
Attribute “"” not allowed on element “a” at this point.
Attribute “nắm” not allowed on element “a” at this point.
Attribute “bắt” not allowed on element “a” at this point.
Attribute “được” not allowed on element “a” at this point.
Attribute “nhu” not allowed on element “a” at this point.
Attribute “cầu” not allowed on element “a” at this point.
Attribute “về” not allowed on element “a” at this point.
Attribute “thời” not allowed on element “a” at this point.
Attribute “gian,” not allowed on element “a” at this point.
Attribute “độ” not allowed on element “a” at this point.
Attribute “thuận” not allowed on element “a” at this point.
Attribute “tiện” not allowed on element “a” at this point.
Attribute “trong” not allowed on element “a” at this point.
Attribute “quá” not allowed on element “a” at this point.
Attribute “trình” not allowed on element “a” at this point.
Attribute “hoàn” not allowed on element “a” at this point.
Attribute “thiện” not allowed on element “a” at this point.
Attribute “một” not allowed on element “a” at this point.
Attribute “cách” not allowed on element “a” at this point.
Attribute “nhanh” not allowed on element “a” at this point.
Attribute “chóng” not allowed on element “a” at this point.
Attribute “của” not allowed on element “a” at this point.
Attribute “k..."” not allowed on element “a” at this point.
Duplicate ID “fb-root”.
Attribute “layout” not allowed on element “div” at this point.
Attribute “show_faces” not allowed on element “div” at this point.
Attribute “share” not allowed on element “div” at this point.
Duplicate ID “otp”.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
The “aria-controls” attribute must point to an element in the same document.
Warnings:
The “button” role is unnecessary for element “button”.
The “form” role is unnecessary for element “form”.
The “navigation” role is unnecessary for element “nav”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Attribute “lụa,” is not serializable as XML 1.0.
Attribute “"” is not serializable as XML 1.0.
Attribute “gian,” is not serializable as XML 1.0.
Attribute “k..."” is not serializable as XML 1.0.
The first occurrence of ID “fb-root” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “otp” was here.
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