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”.
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.
Bad value “Accept-CH” for attribute “http-equiv” on element “meta”.
Attribute “alt” not allowed on element “a” at this point.
Attribute “alt” not allowed on element “i” at this point.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Bad value “presentation” for attribute “role” on element “button”.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Attribute “page” not allowed on element “a” at this point.
The “itemtype” attribute must not be specified on elements that do not have an “itemscope” attribute specified.
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.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “form” role is unnecessary for element “form”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
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