@developer.mozilla.org on Bluesky

JavaScript RequiredThis is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is. Learn more about Bluesky at bsky.social and atproto.com.

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developer.mozilla.org

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🦊 New in Firefox 150: the revert-rule CSS keyword. Make a property behave as if the current rule didn't exist, letting a value from another matching rule take effect instead. Read Now 👇 https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/150

2026-05-15T03:00:22.264Z