Create and manage CSS @layer cascade layers to organize style priorities. Define layer order and generate clean, maintainable CSS.
CSS @layer allows developers to define the priority order of style layers. Layers defined later override earlier ones, preventing specificity wars.
In traditional CSS, selector specificity determines priority. @layer lets you control layer order regardless of selector specificity within each layer.
CSS @layer is supported in all modern browsers: Chrome 99+, Firefox 97+, Safari 15.4+. It's production-ready.
Common pattern: declare layers as reset/base/components/utilities. Use @layer statements to define ordering, then assign styles to each layer.