Just to repeat/emphasise: this is the magic bullet of CSS. Avoid the cascade entirely. Only select on a single distinct class name.https://twitter.com/eevee/status/963946628984987650 …
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This makes it trivial to determine where a selector is used and whether it is still used at all. Rather than trying to dynamically predict every possible DOM structure your app could output, you just use `grep`
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It also makes it very easy to determine why a given DOM element has that final styling. Just look at its CSS classes and those of its ancestor elements.
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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