How we built it

Shadow-Piercing descendant combinator, '/deep/' (aka '>>>') (deprecated)

When a >>> combinator (or shadow-piercing descendant combinator) is encountered in a selector, replace every element in the selector match list with every element reachable from the original element by traversing any number of child lists or shadow trees.


Shadow-Piercing descendant combinator, '/deep/' (aka '>>>'), including '::shadow' pseudo elements, are being deprecated. Dropping these features is the resolution at Web Components f2f meeting [1]. See also "Intent to deprecate" [2]. [1]: [2]:!msg/blink-dev/68qSZM5QMRQ/pT2YCqZSomAJ


Editor's draft

Status in Chromium

Deprecated (launch bug) in:

  • Chrome for desktop release 45
  • Chrome for Android release 45
  • Opera release 32
  • Opera for Android release 32

Consensus & Standardization

  • No public signals
  • No public signals
  • No public signals
  • No signals


Last updated on 2015-08-17