Autoblog.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Content-Security-Policy HTTP header: Bad content security policy: The sandbox directive should contain only “allow” -forms, “allow” -modals, “allow” -pointer-lock, “allow” -popups, “allow” -popups-to-escape-sandbox, “allow” -same-origin, “allow” -scripts, or “allow” -top-navigation. The sandbox directive should contain only “allow” -forms, “allow” -modals, “allow” -pointer-lock, “allow” -popups, “allow” -popups-to-escape-sandbox, “allow” -same-origin, “allow” -scripts, or “allow” -top-navigation.
The “type” attribute is unnecessary for JavaScript resources.
Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “cleartype” for attribute “http-equiv” on element “meta”.
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”.
Stray end tag “head”.
Start tag “body” seen but an element of the same type was already open.
Cannot recover after last error. Any further errors will be ignored.
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