This specification defines the ::part() pseudo-element on shadow hosts, allowing shadow hosts to selectively expose chosen elements from their shadow tree to the outside page for styling purposes.
Documentation
Specification
Specification currently under development in a Working Group
Status in Chromium
Enabled by default
(tracking bug)
Consensus & Standardization
After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.
Owners
Search tags
part theme css shadow,Last updated on 2021-12-13
Comments
This is in CSSWG First Working Public Draft.