Openwebinars.net W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Element “meta” is missing one or more of the following attributes: “charset”, “content”, “http-equiv”, “itemprop”, “name”, “property”.
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 “none” for attribute “media” on element “link”: Media query ended prematurely.
Bad value “button btn btn-primary” for attribute “type” on element “button”.
Attribute “layout” not allowed on element “img” at this point.
Stray end tag “h4”.
Stray end tag “div”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
The “itemprop” attribute was specified, but the element is not a property of any item.
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