Snewsi.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
Bad value “/wireless technology” for attribute “href” on element “a”: Illegal character in path segment: space is not allowed.
No space between attributes.
Quote “'” in attribute name. Probable cause: Matching quote missing somewhere earlier.
Attribute “color:#c33;'” not allowed on element “option” at this point.
Element “option” without attribute “label” must not be empty.
Duplicate attribute “data-id”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Duplicate attribute “class”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Attribute “color:#c33;'” is not serializable as XML 1.0.
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