oddbird / oddbird/css-anchor-positioning
Support anchoring on `:hover`
Nobody has claimed this yet.
- Dominant language
- TypeScript
- Stars
- 493
- Forks
- 18
- Avg merge
- 12h 37m
- Merged PRs (30d)
- 5
Description
Currently, the polyfill does not support :hover selector on either the anchor or anchored element.
While there is no specific mention of :hover in the CSS spec, or any tests in the WPT, this does work in the Chromium implementation- https://codepen.io/jamessw/pen/zYVveBw
While making the anchored element conditional on :hover is likely to not be desired as it would cause a layout shift that likely un-hovers the element (and a loop), making the anchor conditional on :hover could be a useful pattern.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reproducing the behavior from the linked Chromium CodePen and inspect how the polyfill processes anchor and anchored-element selectors. Confirm the desired behavior for :hover on each element, then verify that anchor hovering works without creating a layout-shift loop or regressions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- css, typescript
- Domain
- frontend, web-dev
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100