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CSS3 Backgrounds and Borders Test Suite



Frederick E. Boland Jr.


The goal of this document is to help W3C editors write better specifications, by making a specification easier to interpret without ambiguity and clearer as to what is required in order to conform. It focuses on how to define and specify conformance. It also addresses how a specification might allow variation among conforming implementations. The document presents guidelines or requirements, supplemented with good practices, examples and techniques.


Boland, F. (2005), CSS3 Backgrounds and Borders Test Suite, NISTGCR, [online],, (Accessed May 31, 2023)
Created January 1, 2005, Updated February 19, 2017