w3c/csswg-drafts

[cssom-view] HTMLElement offsetParent quirk?

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#1,812 opened on Sep 13, 2017

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Description

Apologies if this is not the right place to post this. Although I'm sure this spec is ancient, is it not incorrect to report <body> as an offsetParent when the body is statically positioned, as it is by default?

This can easily be seen as unexpected behavior by creating an absolutely positioned element with bottom in a long document. The element is clearly positioned relative to documentElement, not `body.

https://drafts.csswg.org/cssom-view/#dom-htmlelement-offsetparent

Contributor guide

Research direction
Investigate the CSSOM View specification for HTMLElement.offsetParent and compare with browser implementations. Check if the specification incorrectly lists <body> as offsetParent when it is statically positioned. Look at the spec text and test cases.
Tech stack
htmlcss
Domain
web devfrontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
HTMLCSS positioningbasic spec reading
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35