Information-management.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “true” for attribute “async” on element “script”.
Attribute “deferred” not allowed on element “script” at this point.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “"off"” not allowed on element “div” at this point.
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Element “h6” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Attribute “"off"” is not serializable as XML 1.0.
Attribute “href” without an explicit value seen. The attribute may be dropped by IE7.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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