Cascading Style Sheets (CSS) first dropped in 1996, and it remains an essential, evolving part of the web development stack. Like other living languages, CSS is constantly introducing new features in response to real-world practices. This quick evolution can make it easy for even dedicated developers to miss new features. Here’s a look at the most useful new and upcoming features in CSS this year.
Cascade layers
Cascade layers is an elaboration of how CSS specificity and inheritance works. As such, it’s a bit abstract to understand, but also fundamental to how CSS works. A layer is a kind of logical space that is interjected into the algorithm a CSS engine uses to determine what styles apply to elements based on cascading, specificity, and inheritance.
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