Buitoni.com 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 first occurrence of ID “antiClickjack” was here.
Element name “apex:page” cannot be represented as XML 1.0.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Errors:
Duplicate ID “antiClickjack”.
Bad value for attribute “src” on element “iframe”: Tab, new line or carriage return found.
Element “apex:page” not allowed as child of element “li” in this context. (Suppressing further errors from this subtree.)
Attribute “alternatetext” not allowed on element “input” at this point.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
The “aria-labelledby” attribute must point to an element in the same document.
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