Hello, CSS Cascade Layers - Ahmad Shadeed
▻http://ishadeed.com/article/cascade-layers
In this article, we’ll explore how #cascade_layers work, and how they will help us write #CSS with more confidence, along with use-cases and examples.
In the layers panel, notice how each button lives in a layer. The order is per the @layer definition at the top.
When the order of layers is changed, the components layer will override the variations one. As a result, the default button style will win.
https://ishadeed.com/assets/cascade-layers/cascade-layers-3-1.png 
https://ishadeed.com/assets/cascade-layers/cascade-layers-4.png
Enfin une explication claire de ce truc, ça y est, je peux dire que j’ai capté le bouzin ^^
