Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “type” attribute is unnecessary for JavaScript resources.
The “navigation” role is unnecessary for element “nav”.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Empty heading.
The “type” attribute for the “style” element is not needed and should be omitted.
Errors:
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.
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The “name” attribute on the “img” element is obsolete. Use the “id” attribute instead.
Element “img” is missing required attribute “src”.
Bad value “((min-device-pixel-ratio: 1.5) and (min-width: 721px))” for attribute “media” on element “source”: Expected a CSS media feature but saw “min-device-pixel-ratio” instead.
Stray end tag “source”.
Bad value “((min-device-pixel-ratio: 1.5) and (min-width: 421px))” for attribute “media” on element “source”: Expected a CSS media feature but saw “min-device-pixel-ratio” instead.
Bad value “((min-device-pixel-ratio: 1.5) and (max-width: 420px))” for attribute “media” on element “source”: Expected a CSS media feature but saw “min-device-pixel-ratio” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)
Attribute “value” not allowed on element “a” at this point.
The “itemprop” attribute was specified, but the element is not a property of any item.
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