Errors:
Attribute “itemprop” not allowed on element “meta” at this point.
End tag “strong” violates nesting rules.
No “a” element in scope but a “a” end tag seen.
The “center” element is obsolete. Use CSS instead.
Bad value “auto” for attribute “height” on element “img”: Expected a digit but saw “a” instead.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “300px” for attribute “width” on element “img”: Expected a digit but saw “p” instead.
Attribute “name” not allowed on element “div” at this point.
Duplicate ID “overview-video”.
Element “style” not allowed as child of element “center” in this context. (Suppressing further errors from this subtree.)
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “name” not allowed on element “meta” at this point.
Element “meta” is missing one or more of the following attributes: “itemprop”, “property”.
The “itemprop” attribute was specified, but the element is not a property of any item.
Warnings:
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “overview-video” was here.
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