Kosiceonline.sk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad start tag in “img” in “head”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Stray end tag “noscript”.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Bad value “” for attribute “name” on element “input”: Must not be empty.
Bad value “” for attribute “id” on element “input”: An ID must not be the empty string.
Duplicate ID “”.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Warnings:
The first occurrence of ID “” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
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