Sadjad.ac.ir W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “navigation” role is unnecessary for element “nav”.
Errors:
Element “style” not allowed as child of element “div” 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.
Bad value “” for attribute “aria-labelledby” on element “nav”: An IDREFS value must contain at least one non-whitespace character.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Element “div” not allowed as child of element “ol” in this context. (Suppressing further errors from this subtree.)
Element “p” not allowed as child of element “h6” in this context. (Suppressing further errors from this subtree.)
The “aria-labelledby” attribute must point to an element in the same document.
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