Tutorial4us.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
No space between attributes.
Quote “"” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “author"” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “http-equiv”, “itemprop”, “name”, “property”.
Duplicate attribute “rel”.
Duplicate ID “topmenu”.
Duplicate ID “left”.
Duplicate ID “right”.
Bad value “_nofollow” for attribute “rel” on element “a”: The string “_nofollow” is not a registered keyword.
Attribute “color:#ffffff;"” not allowed on element “div” at this point.
No “p” element in scope but a “p” end tag seen.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Attribute “author"” is not serializable as XML 1.0.
The first occurrence of ID “topmenu” was here.
The first occurrence of ID “left” was here.
The first occurrence of ID “right” was here.
Attribute “color:#ffffff;"” is not serializable as XML 1.0.
The “language” attribute on the “script” element is obsolete. You can safely omit it.
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