Errors:
Attribute “charset” not allowed on element “meta” at this point.
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 “https://fonts.googleapis.com/css?family=Open+Sans:300,300i,400,400i,600,600i,700,700i,800,800i|Roboto:100,100i,300,300i,400,400i,500,500i,700,700i,900,900i&subset=cyrillic” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “http://www.w3.org/1999/html” for the attribute “xmlns” (only “http://www.w3.org/1999/xhtml” permitted here).
Attribute “sign-up-for” not allowed on element “a” at this point.
An element with “role=gridcell” must be contained in, or owned by, an element with “role=row”.
Text not allowed in element “iframe” in this context.
The “aria-labelledby” attribute must point to an element in the same document.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “type” attribute for the “style” element is not needed and should be omitted.
The “navigation” role is unnecessary for element “nav”.
Attribute “xmlns” is not serializable as XML 1.0.
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