Errors:
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead.
Attribute “addthis:url” not allowed on element “div” at this point.
Attribute “addthis:title” not allowed on element “div” at this point.
Bad value “_new” for attribute “target” on element “a”: Reserved keyword “new” used.
Duplicate ID “embed_signup_default”.
Duplicate ID “embedded-subscribe-form”.
Duplicate ID “e-EMAIL”.
Duplicate ID “embedded-subscribe1”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)
Attribute “addthis:url” is not serializable as XML 1.0.
Attribute “addthis:title” is not serializable as XML 1.0.
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).
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The first occurrence of ID “embed_signup_default” was here.
The first occurrence of ID “embedded-subscribe-form” was here.
The first occurrence of ID “e-EMAIL” was here.
The first occurrence of ID “embedded-subscribe1” was here.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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