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.
Keep selector conflicts to a minimum
The new @scope rule is here! It’s a better way to keep our component styles contained – without relying on third-party tools or extreme naming conventions.
A new proposal for importing from NPM packages in Sass
UI libraries like Vuetify and Bootstrap make it easy to extend their themes by providing Sass source files with their NPM packages. Now, Sass is requesting feedback on a simpler way to import those libraries into your Sass styles with e.g. @use "pkg:bootstrap".
Giving us control over the cascade
Don’t let specificity force you into strict selector conventions. Cascade Layers allow us to manage specificity without resorting to naming hacks or the !important flag.