Carnegiecouncil.org W3C HTML Markup Validation
HTML markup errors and warnings
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Errors:
Bad value “en_US” for attribute “lang” on element “html”: The language subtag “en_us” is not a valid language subtag.
Duplicate ID “s”.
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Bad value “/news/announcements/2017-10-27-call-for-papers/_res/id=Picture/eia call for papers.jpg/thumbnail=1/width=323/window=0,1,645,427” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Bad value “/studio/multimedia/20171113-trump-north-korea-china-war-or-peace-gordon-g-chang/_res/id=Picture/Gordan Chang DPRK Star.jpg/thumbnail=1/width=323/window=0,1,645,427” for attribute “src” on element “img”: Illegal character in path segment: space is not allowed.
Element “script” must not have attribute “async” unless attribute “src” is also specified.
Warnings:
Attribute “href” without an explicit value seen. The attribute may be dropped by IE7.
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
The first occurrence of ID “s” was here.
United States US