Seohocasi.com W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
When the “srcset” attribute has any image candidate string with a width descriptor, the “sizes” attribute must also be present.
The element “header” must not appear as a descendant of the “header” element.
Attribute “wpfc-data-original-src” not allowed on element “img” at this point.
Element “heading” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
The element “header” must not appear as a descendant of the “footer” element.
Attribute “wpfc-data-original-src” not allowed on element “iframe” at this point.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Attribute “wpfc-href” not allowed on element “link” at this point.
Element “link” is missing one or more of the following attributes: “href”, “property”, “resource”.
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “type” attribute is unnecessary for JavaScript resources.
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