Errors:
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://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Duplicate ID “popDemo”.
Stray end tag “div”.
Duplicate ID “popEbook”.
Duplicate ID “referredNo”.
Duplicate ID “referredYes”.
Duplicate ID “emailOptInPromotionDynamic”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Element “div” not allowed as child of element “span” in this context. (Suppressing further errors from this subtree.)
Duplicate ID “screenshot-laptop”.
Attribute “webkitallowfullscreen” not allowed on element “iframe” at this point.
Attribute “mozallowfullscreen” not allowed on element “iframe” at this point.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Bad value “auto” for attribute “height” on element “img”: Expected a digit but saw “a” instead.
Attribute “canvas” not allowed on element “header” at this point.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Warnings:
The first occurrence of ID “popDemo” was here.
The first occurrence of ID “popEbook” was here.
The first occurrence of ID “referredNo” was here.
The first occurrence of ID “referredYes” was here.
The first occurrence of ID “emailOptInPromotionDynamic” was here.
The first occurrence of ID “screenshot-laptop” was here.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “banner” role is unnecessary for element “header”.
The “navigation” role is unnecessary for element “nav”.
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