Questions tagged [validation]

Refers to the process of comparing the output of a program or tool to an established standard.

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CSS error in EPUB

Epubcheck reports an error for a paragraph like: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/...