Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The “main” role is unnecessary for element “main”.
Consider using the “h1” element as a top-level heading only (all “h1” elements are treated as top-level headings by many screen readers and other tools).
Empty heading.
The “contentinfo” role is unnecessary for element “footer”.
Errors:
A “link” element with a “sizes” attribute must have a “rel” attribute that contains the value “icon” or the value “apple-touch-icon”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “an” not allowed as child of element “a” in this context. (Suppressing further errors from this subtree.)
Stray end tag “span”.
End tag “a” violates nesting rules.
Bad value “true” for attribute “async” on element “script”.
Attribute “lazyload-srcset” not allowed on element “source” at this point.
Attribute “lazyload-srcset” not allowed on element “img” at this point.
Element “img” is missing required attribute “src”.
Attribute “lazyload-src” not allowed on element “img” at this point.
Bad value “” for attribute “src” on element “img”: Must be non-empty.
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