Errors:
The “profile” attribute on the “head” element is obsolete. To declare which “meta” terms are used in the document, instead register the names as meta extensions. To trigger specific UA behaviors, use a “link” element instead.
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.
Bad value “screen,projection” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
The element “header” must not appear as a descendant of the “header” element.
Bad value “100%” for attribute “width” on element “img”: Expected a digit but saw “%” 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 “auto>” for attribute “height” on element “img”: Expected a digit but saw “a” instead.
The “align” attribute on the “p” element is obsolete. Use CSS instead.
Duplicate attribute “src”.
The “sizes” attribute may be specified only if the “srcset” attribute is also present.
Malformed byte sequence: “e2”, “80”.
Duplicate ID “tweet-1”.
The “clear” attribute on the “br” element is obsolete. Use CSS instead.
Duplicate ID “tweet-2”.
Duplicate ID “tweet-3”.
Duplicate ID “tweet-4”.
Duplicate ID “tweet-5”.
Duplicate ID “tweet-6”.
Duplicate ID “tweet-7”.
Duplicate ID “tweet-8”.
Duplicate ID “tweet-9”.
Duplicate ID “tweet-10”.
Stray end tag “div”.
Element “div” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
Warnings:
Section lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all sections.
The document is not mappable to XML 1.0 due to two consecutive hyphens in a comment.
The first occurrence of ID “tweet-1” was here.
Article lacks heading. Consider using “h2”-“h6” elements to add identifying headings to all articles.
The first occurrence of ID “tweet-2” was here.
The first occurrence of ID “tweet-3” was here.
The first occurrence of ID “tweet-4” was here.
The first occurrence of ID “tweet-5” was here.
The first occurrence of ID “tweet-6” was here.
The first occurrence of ID “tweet-7” was here.
The first occurrence of ID “tweet-8” was here.
The first occurrence of ID “tweet-9” was here.
The first occurrence of ID “tweet-10” was here.
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