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Error Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword. Found 34 times on this site.
Error The “clear” attribute on the “br” element is obsolete. Use CSS instead. Found 28 times on this site.
Error No “p” element in scope but a “p” end tag seen. Found 23 times on this site.
Error Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.) Found 14 times on this site.
Error An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images. Found 12 times on this site.
Error The “align” attribute on the “img” element is obsolete. Use CSS instead. Found 11 times on this site.
Error The “align” attribute on the “p” element is obsolete. Use CSS instead. Found 10 times on this site.
Error Bad value “18px” for attribute “height” on element “img”: Expected a digit but saw “p” instead. Found 7 times on this site.
Error Bad value “18px” for attribute “width” on element “img”: Expected a digit but saw “p” instead. Found 7 times on this site.
Error Almost standards mode doctype. Expected “<!DOCTYPE html>”. Found 6 times on this site.
Error No space between attributes. Found 5 times on this site.
Error The value of the “for” attribute of the “label” element must be the ID of a non-hidden form control. Found 5 times on this site.
Error The “frameborder” attribute on the “iframe” element is obsolete. Use CSS instead. Found 5 times on this site.
Error Attribute “alt” not allowed on element “a” at this point. Found 4 times on this site.
Error Element “script” must not have attribute “charset” unless attribute “src” is also specified. Found 4 times on this site.
Error Bad value “lightbox[hp-photos]” for attribute “rel” on element “a”: The string “lightbox[hp-photos]” is not a registered keyword. Found 4 times on this site.
Error Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag. Found 4 times on this site.
Error The element “h3” must not appear as a descendant of the “th” element. Found 4 times on this site.
Error The “profile” attribute on the “head” element is obsolete.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. Found 4 times on this site.
Error No “li” element in scope but a “li” end tag seen. Found 3 times on this site.
Error Start tag “a” seen but an element of the same type was already open. Found 3 times on this site.
Error Cannot recover after last error. Any further errors will be ignored. Found 3 times on this site.
Error Stray end tag “a”. Found 3 times on this site.
Error Stray end tag “em”. Found 3 times on this site.
Error The “align” attribute on the “h4” element is obsolete. Use CSS instead. Found 3 times on this site.