123host.vn W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Errors:
Bad value “cn” for attribute “hreflang” on element “link”: The language subtag “cn” is not a valid ISO language part of a language tag.
A document must not include more than one “meta” element with its “name” attribute set to the value “description”.
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.
Bad value “30px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Bad value “30px” for attribute “height” on element “img”: Expected a digit but saw “p” instead.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
The “font” element is obsolete. Use CSS instead.
Element “div” not allowed as child of element “strong” in this context. (Suppressing further errors from this subtree.)
The “align” attribute on the “img” element is obsolete. Use CSS instead.
The “itemprop” attribute was specified, but the element is not a property of any item.
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