Hcmiu.edu.vn W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
Bad value “Content-Script-Type” for attribute “http-equiv” on element “meta”.
Bad value “Content-Style-Type” for attribute “http-equiv” on element “meta”.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Element “i” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
End tag “br”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
The “align” attribute on the “tr” element is obsolete. Use CSS instead.
Element “marquee” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Warnings:
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Text run is not in Unicode Normalization Form C.
The value of attribute “title” on element “span” from namespace “http://www.w3.org/1999/xhtml” is not in Unicode Normalization Form C.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
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