As a page loads, many resources are referenced within its HTML that provide a page with its appearance and layout through CSS, as well as its interactivity through JavaScript. In this module, a number of important concepts related to these resources and how they affect a page's load time are covered.| web.dev
このシリーズでは、CSS の重要な概念であるカスケード（Cascade）の基礎を改めて学び直し、その応用としてカスケードレイヤー（`@layer`）について説明していきます。今回はカスケードの仕組みを説明する基礎編です。| griponminds.jp
My goal with this bookmarkable guide is to provide a list of (frankly: incredible) new additions to CSS lately. There is no hardline criteria for this list other than that these things are all fairly new and my sense is that many people aren’t aware of these things. Or even if they are, they don’t […]| frontendmasters.com
1. Introduction| www.w3.org
We all have run into CSS collisions and sudden regressions in our codebases when new styles are written or 3rd-party styles are added. This is because of the interdependence of styles due to source order, specificity, and inheritance. Some ways to control the cascade have included methodologies like ITCSS and BEM and other newer native features. Cascade layers will be the ultimate native solution for resolving conflicts between multiple sources of styles. Cascade layers introduce the new at...| Smashing Magazine
When authoring CSS we have to carefully think about how we write and structure our code. Cascade Layers (CSS @layer) aim to ease this task.| Bram.us
This is your complete guide to CSS cascade layers, a CSS feature that allows us to define explicit contained layers of specificity.| CSS-Tricks