K12net.com W3C HTML Markup Validation
HTML markup errors and warnings
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Warnings:
Consider avoiding viewport values that prevent users from resizing documents.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Errors:
Bad value “only screen and (-webkit-min-device-pixel-ratio: 2)” for attribute “media” on element “link”: Expected a CSS media feature but saw “-webkit-min-device-pixel-ratio” instead.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
“=” in an unquoted attribute value. Probable causes: Attributes running together or a URL query string in an unquoted attribute value.
Bad value “'stylesheet'” for attribute “rel” on element “link”: The string “'stylesheet'” is not a registered keyword.
A “link” element must not appear as a descendant of a “body” element unless the “link” element has an “itemprop” attribute or has a “rel” attribute whose value contains “dns-prefetch”, “pingback”, “preconnect”, “prefetch”, “preload”, “prerender”, or “stylesheet”.
Bad value “http://fonts.googleapis.com/css?family=Open Sans:700” for attribute “href” on element “link”: Illegal character in query: space is not allowed.
Bad value “page-wrap nopadding” for attribute “id” on element “div”: An ID must not contain whitespace.
No “p” element in scope but a “p” end tag seen.
End tag “p” seen, but there were open elements.
Unclosed element “span”.
Stray end tag “span”.
Attribute “alt” not allowed on element “a” at this point.
A slash was not immediately followed by “>”.
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