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

headingoffset HTML global attribute

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

Description

Description

The headingoffset global attribute increases the computed heading level of the heading elements inside the element it is set on, without changing the elements used to write them.

Specification

https://html.spec.whatwg.org/multipage/sections.html#heading-levels-&-offsets

web-feature

https://web-platform-dx.github.io/web-features-explorer/features/heading-offset/

Test Links

No response

Additional Signals

flagged in Chrome and Firefox and already documented in MDN

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 with the HTML specification section on heading levels and offsets, then compare the documented behavior in MDN and the web-features entry. Locate the relevant existing web-platform-tests for headings or global attributes. Done means coverage verifies headingoffset behavior across the cases required by the specification.

Written by the indexing model from the issue text.

Assessment

Tech stack
html
Domain
testing, web-dev
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
58/100

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