Vfa.gov.vn W3C HTML Markup Validation
HTML markup errors and warnings
(Rescan now...)
Errors:
Obsolete doctype. Expected “<!DOCTYPE html>”.
Start tag “head” seen but an element of the same type was already open.
Stray end tag “head”.
Attribute “menu_id” not allowed on element “span” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate ID “basic-addon2”.
Duplicate ID “submenu”.
Element “div” not allowed as child of element “h2” in this context. (Suppressing further errors from this subtree.)
Bad value “"checked"” for attribute “checked” on element “input”.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Text run is not in Unicode Normalization Form C.
The first occurrence of ID “basic-addon2” was here.
The first occurrence of ID “submenu” was here.
This document appears to be written in Vietnamese. Consider adding “lang="vi"” (or variant) to the “html” start tag.
Viet Nam VN