web-platform-tests / web-platform-tests/interop

Support `transition-behaviour` for `display` and `content-visibility`

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#1,384 2 comments 29 reactions 0 assignees View on GitHub

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focus-area-proposal
Dominant language
JavaScript
Stars
524
Forks
35
Avg merge
1d 4h
Merged PRs (30d)
10

Description

Description

This is support for animating the visibility of an object, which is very useful to transition the disappearance of an element.

This was proposed last year, but not selected: https://github.com/web-platform-tests/interop/issues/1112

Specification

https://drafts.csswg.org/css-display-4/#display-animation

web-feature

https://web-platform-dx.github.io/web-features-explorer/features/display-animation/

Test Links

https://wpt.fyi/results/?q=feature:display-animation

Additional Signals

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the CSS Display Level 4 specification and reviewing the linked web-feature entry. Then inspect the display-animation results on wpt.fyi to determine which relevant tests and project entry points are involved; done means the requested transition behavior is covered by the appropriate Interop tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
css
Domain
frontend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
45/100

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