Ef.edu W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Stray doctype.
Bad value “og:http://ogp.me/ns#” for attribute “prefix” on element “html”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Bad value “Set-Cookie” for attribute “http-equiv” on element “meta”.
Attribute “arial-label” not allowed on element “a” at this point.
Attribute “aria-role” not allowed on element “a” at this point.
Element “bgpicture” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “bgpicture” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Bad value “” for attribute “target” on element “a”: Browsing context name must be at least one character long.
Duplicate ID “omnidiv-st-language-products”.
No space between attributes.
Bad value “//schema.org/” for attribute “vocab” on element “div”: The string “//schema.org/” is not an absolute URL.
Element “h2” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “omnidiv-st-language-products” was here.
United States US