UserAgent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36

Steps to reproduce the problem:
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What is the expected behavior?

What went wrong?
Shadow-Piercing descendant combinator, '/deep/' (aka '>>>') (deprecated)
Web Components
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.
Comments

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]: https://www.w3.org/wiki/Webapps/WebComponentsApril2015Meeting [2]: https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/68qSZM5QMRQ/pT2YCqZSomAJ See also "Intent to remove": https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/HX5Y8Ykr
Specification

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

Firefox:
No public signals
Edge:
No public signals
Safari:
No public signals
Web Developers:
No signals
Owner

hayato@chromium.org
Last updated on 2017-03-28
Except as otherwise noted, the content of this page under CC Attribution 2.5 license. Code examples are Apache-2.0.
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WebStore page: 

Did this work before? N/A 

Chrome version: 57.0.2987.133  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

Shadow-Piercing descendant combinator, '/deep/' (aka '>>>') (deprecated)
Web Components
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.
Comments

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]: https://www.w3.org/wiki/Webapps/WebComponentsApril2015Meeting [2]: https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/68qSZM5QMRQ/pT2YCqZSomAJ See also "Intent to remove": https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/HX5Y8Ykr
Specification

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

Firefox:
No public signals
Edge:
No public signals
Safari:
No public signals
Web Developers:
No signals
Owner

hayato@chromium.org
Last updated on 2017-03-28
Except as otherwise noted, the content of this page under CC Attribution 2.5 license. Code examples are Apache-2.0.
File content issue | Request "edit" access | File site bug | About | Login