Warnings:
The “type” attribute is unnecessary for JavaScript resources.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
The “main” role is unnecessary for element “main”.
Attribute “}” is not serializable as XML 1.0.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Errors:
A “charset” attribute on a “meta” element found after the first 1024 bytes.
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
The element “a” must not appear as a descendant of an element with the attribute “role=button”.
Element “span” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
No space between attributes.
Attribute “}” not allowed on element “a” at this point.
Bad value “https://slack.com/slack-tips?utm_source=hppromo&utm_campaign=general promotion” for attribute “href” on element “a”: Illegal character in query: space 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 “https://slack.com/resources/sales-teams-and-slack-a-handbook?utm_source=hppromo&utm_campaign=general promotion” for attribute “href” on element “a”: Illegal character in query: space is not allowed.
Bad value “1” for attribute “version” on element “svg”.
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