Is it possible to add css3 properties like : "animation-name", "animation-timing-function", or values like : "display-table" in CSS syntax highlighting.
I guess it implies *css_completions.py* but I don't know how to proceed.
Luckily you're not the first one to have this question, and this guy has made a package that does just that: https://github.com/i-akhmadullin/Sublime-CSS3
At the bottom there's a installation-guide using the package manager.