Re: [w3c/webcomponents] Why must the is="" attribute exist? (#509)

> a new CSS pseudo-class would be needed: `:subtypeof(button)`

Not really. The point of the `is= approach` is that since you have a `button`, that already matches CSS selectors for `button`. If you want to match a specific subtype you can do `button[is=broken-button]` … 

---
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/webcomponents/issues/509#issuecomment-225374055