If you've ever added !important to a CSS rule just to override a third-party component's styles, you know the feeling. You know it's wrong. You know it'll come back to haunt you. But the alternative, writing an even more specific selector, feels just as bad. CSS specificity has been the source of countless hours of frustration in frontend development. And while conventions like BEM and methodologies like ITCSS have helped, they're all workarounds for a fundamental problem in how CSS resolves conflicts. That changed with CSS Cascade Layers . What Are Cascade Layers? Cascade Layers, introduced via the @layer rule , give you explicit control over which styles take priority — independent of selector specificity. You declare an order of layers, and CSS respects it. Period.…