w3c / w3c/csswg-drafts

[css-env-1] values for hiding fullscreen browser UI

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css-env-1
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Description

Following on from #2871, the browser/host might show some UI when in fullscreen, but hide that UI after a while. For example, a video site that wants to show media in fullscreen with a custom UI will need to use #2871 to avoid the browser button to exit fullscreen. However, the browser doesn't want to constantly show the UI (distracting the user from the media).

  • fullscreen-auto-hide-duration - a <time> value that describes how long the browser will take to fade out its UI
  • fullscreen-auto-hide-delay - a <time> value that describes how long before the browser begins the fade

Contributor guide

Open the contributing guide

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 related issue #2871 and the CSS fullscreen discussions to understand the existing proposal. The issue names fullscreen-auto-hide-duration and fullscreen-auto-hide-delay; done means reaching agreement on their semantics and documenting the resulting CSS specification changes, but no file or test entry point is identified here.

Written by the indexing model from the issue text.

Assessment

Tech stack
css
Domain
frontend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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