In https://www.w3.org/TR/2016/CR-css-values-3-20160929/#references : - [CSS-BACKGROUNDS-3] and [CSS3BG] - [CSS-IMAGES-3] and [CSS3-IMAGES] - [CSS-COLOR-3] and [CSS3COLOR] - ([CSS-CASCADE-4] and [CSS3CASCADE]) These references are overlapping (or different version forms).
In https://www.w3.org/TR/2016/CR-css-values-3-20160929/#references :
These references are overlapping (or different version forms).