Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Archived

CSS level 4 Class Selectors

steeples05

As a programmer, I have need to use the CSS Level 4 selectors, but Firefox hasn't implemented them yet. Surprisingly, Safari has. I need this functionality <element>:nth-child(2 of .<class name>) for automation testing. Do you know if there is a timeframe when this feature will be implemented within Firefox?

As a programmer, I have need to use the CSS Level 4 selectors, but Firefox hasn't implemented them yet. Surprisingly, Safari has. I need this functionality '''<element>:nth-child(2 of .<class name>)''' for automation testing. Do you know if there is a timeframe when this feature will be implemented within Firefox?

All Replies (1)

This is https://bugzil.la/854148 and I don't think if there's any timeframe. Spec is not stable yet, so we're waiting for w3c.

For now it's Safari-only feature