Metrowagonmash.ru W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Attribute “sidebarjs” not allowed on element “div” at this point.
Attribute “sidebarjs-toggle” not allowed on element “span” at this point.
Element “div” is missing one or more of the following attributes: “role”.
Attribute “sidebarjs-toggle” not allowed on element “button” at this point.
Bogus comment.
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 “id” on element “input”: An ID must not be the empty string.
Attribute “span” not allowed on element “span” at this point.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
The “type” attribute is unnecessary for JavaScript resources.
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