Giaohangtietkiem.vn W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No space between attributes.
Saw “"” when expecting an attribute name. Probable cause: “=” missing immediately before.
Attribute “"” not allowed on element “ul” at this point.
Bad value “” for attribute “action” on element “form”: Must be non-empty.
End tag “form” seen, but there were open elements.
Unclosed element “div”.
Cannot recover after last error. Any further errors will be ignored.
Warnings:
Attribute “"” is not serializable as XML 1.0.
The “navigation” role is unnecessary for element “nav”.
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