Custom CSS properties (aka variables) can cause problems if the custom property fails. See this post to see how @supports can solve the issues…
Overview of the benefits of CSS variables and helpful tips and tricks for working with them…
CSS Variables support is starting to appear in a few browsers. This article explains what they are and how they’re different from SASS and LESS variables…
A CSS compiler that retains the original CSS syntax but adds a bunch of new features inclusing variables, mixins, nested inheritance and operations. It’s called LESS, which stands for Leaner CSS…