Foundationyears.org.uk W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
A “meta” element with an “http-equiv” attribute whose value is “X-UA-Compatible” must have a “content” attribute with the value “IE=edge”.
Bad value “https://api.w.org/” for attribute “rel” on element “link”: The string “https://api.w.org/” is not a registered keyword.
Bad value “//fonts.googleapis.com/css?family=Yanone+Kaffeesatz:300,400,700|Alike” for attribute “href” on element “link”: Illegal character in query: “|” is not allowed.
Self-closing syntax (“/>”) used on a non-void HTML element. Ignoring the slash and treating as a start tag.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
No “p” element in scope but a “p” end tag seen.
Attribute “hidefocus” not allowed on element “a” at this point.
Start tag “a” seen but an element of the same type was already open.
Stray end tag “a”.
Warnings:
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
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