Errors:
Attribute “amp” not allowed on element “html” at this point.
A document must not include both a “meta” element with an “http-equiv” attribute whose value is “content-type”, and a “meta” element with a “charset” attribute.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Saw “<!--” within a comment. Probable cause: Nested comment (not allowed).
Stray end tag “style”.
Attribute “amp-custom” not allowed on element “style” at this point.
Attribute “amp-boilerplate” not allowed on element “style” at this point.
Attribute “custom-element” not allowed on element “script” at this point.
The “scrolling” attribute on the “iframe” element is obsolete. Use CSS instead.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
The “allowtransparency” attribute on the “iframe” element is obsolete. Use CSS instead.
The “center” element is obsolete. Use CSS instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Bad value “true” for attribute “defer” on element “script”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The “charset” attribute on the “script” element is obsolete.
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
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