Nicehash.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Duplicate ID “css”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
No space between attributes.
Attribute “}” not allowed on element “a” at this point.
The text content of element “time” was not in the required format: The literal did not satisfy the time-datetime format.
Bad value “sameAs” for attribute “rel” on element “a”: The string “sameAs” is not a registered keyword.
Element “style” not allowed as child of element “body” 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:
The first occurrence of ID “css” was here.
Consider avoiding viewport values that prevent users from resizing documents.
Attribute “}” is not serializable as XML 1.0.
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