w3c / w3c/csswg-drafts

[css-contain-3] container queries reacting to css grid column/row width/height

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css-contain-3
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Description

When using CSS Grid, the outer container element is not what the element is sized to. It is sized to the column/row within that element.

Container queries should react to the size of the column/row of the grid, not the size of the parent element.

https://www.w3.org/TR/css-contain-3/

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 with the linked CSS Containment Level 3 specification and review how container query sizing is defined for elements participating in CSS Grid. Done means the specification clearly defines whether queries react to the grid track's column or row size rather than the outer container size.

Written by the indexing model from the issue text.

Assessment

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

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