Browser representatives on CSS [selector] performance

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My anecdotal evidence regarding CSS selector performance is: I’ve never once bothered with optimizing for it, and typically outright ignore traditional “advice” around it, and it’s never been a problem.

Ben Frain looks around at what browser people say about it and:

At this point I’m happily re-concluding that CSS selectors are rarely a problem with static pages. Plus, attempting to second guess which selector will perform well is probably futile.

If you’re doing something extraordinarily DOM-heavy, I think you know that and can worry about it then.

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