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In today's uses, cascade _with_ custom properties (the vars defined within :root ) are powerful and are what I leverage when providing theme-able ui libraries. Dark mode, light mode, large mode can all be solved using custom properties which to me most exemplify the power of the cascade.

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that is inheritance not the cascade: Inheritance allows for DOM nodes to use properties set on their ancestors, the cascade algorithm is how multiple conflicting rules interact and are overwritten.

https://developer.mozilla.org/en-US/docs/Web/CSS/Cascade

https://developer.mozilla.org/en-US/docs/Learn/CSS/Building_...

Custom properties are by default inherited by all descendant nodes (they also interact with the cascade, but it is less relevant) and this can be used with tailwind in a couple of different ways: https://stackoverflow.com/questions/64872861/how-to-use-css-...

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