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fragment of an inverted triangle with the cascade -- cascade layers are highlighted below element-attached styles and above specificity

A Complete Guide to CSS Cascade Layers

Cascade layers are a new CSS feature that allows us to define explicit contained layers of specificity, so that we have full control over which styles take priority in a project without relying on specificity hacks or !important. This guide is intended to help you fully understand what cascade layers are for, how and why you might choose to use them, the current levels of support, and the syntax.

See more at CSS-Tricks »

Upcoming Workshop

Mia from behind, standing at a laptop - speaking to a conference audience and gesturing to one side

Cascading Style Systems

A workshop on resilient & maintainable CSS

by Miriam

New CSS features are shipping at an unprecedented rate – cascade layers, container queries, the :has() selector, subgrid, nesting, and so much more. It’s a good time to step back and understand how these tools fit together in a declarative system – a resilient cascade of styles.

Register for the October workshop »

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