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The validator claims the "table" tag and all of it's attributes, INCLUDING EVEN THE "STYLE" ATTRIBUTE, are not in the XHTML 1.0 Strict specification. It caused 275 validation errors on my site, and that is not what we want to show our visitors.
(In reply to comment #0) > The validator claims the "table" tag and all of it's attributes, INCLUDING EVEN > THE "STYLE" ATTRIBUTE, are not in the XHTML 1.0 Strict specification. No, it doesn't, it says "TABLE" (UPPERCASE) is not, and gives an explanation: "This error is often caused by: [...] by using upper-case tags in XHTML (in XHTML attributes and elements must be all lower-case)."