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”.
Using the “meta” element to specify the document-wide default language is obsolete. Consider specifying the language on the root element instead.
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
Attribute “alt” not allowed on element “span” at this point.
End tag “p” seen, but there were open elements.
Unclosed element “span”.
Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Element “h2” not allowed as child of element “button” in this context. (Suppressing further errors from this subtree.)
End tag “nav” seen, but there were open elements.
Unclosed element “div”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “browser-check”.
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” instead.
Element “img” is missing required attribute “src”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “_new” for attribute “target” on element “a”: Reserved keyword “new” used.
Stray end tag “iselse”.
Bad value “true” for attribute “async” on element “script”.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “main” role is unnecessary for element “main”.
The first occurrence of ID “browser-check” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
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