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Firefox for Web Developers

@webdevs.firefox.com

CSS sibling-count() and sibling-index() are newly available across engines! Here's how they work:

25/8/26, 1:03 pm25 reposts149 likes

Anthony Frehner

No there’s no excuses for not having a rainbow brick background on all videos

Firefox for Web Developers

@webdevs.firefox.com

And the full docs on MDN: developer.mozilla.org/en-US/docs/W...

developer.mozilla.orgsibling-index() CSS function - CSS | MDNThe sibling-index() CSS function returns an integer representing the position of the current element in the DOM tree relative to all its sibling elements. The returned value is the index number of…

Firefox for Web Developers

@webdevs.firefox.com

This was another feature added by @sajidanwar.com 🎉🎉🎉