All of these @codepen work in #FirefoxBeta & #FirefoxNightly with the flag layout.css.attr.enabled
https://codepen.io/collection/GpWYMN
I love attr(type(<syntax>)) #CSS #LessJavaScript #Firefox149
Client Info
Server: https://mastodon.social
Version: 2025.07
Repository: https://github.com/cyevgeniy/lmst