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[csswg-drafts] [css-multicol] Should contained out-of-flow descendants affect column balancing? (#6279)

From: Morten Stenshorne via GitHub <sysbot+gh@w3.org>
Date: Mon, 10 May 2021 07:41:21 +0000
To: public-css-archive@w3.org
Message-ID: <issues.opened-883614494-1620632480-sysbot+gh@w3.org>
mstensho has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-multicol] Should contained out-of-flow descendants affect column balancing? ==
Out-of-flow positioned boxes usually don't affect the size of their ancestors (with the exception of any scrollbars that an OOF might cause).

However:

```
<p>Should there be a yellow 100px tall multicol container below, with three
  columns, with one blue square in each?</p>
<div style="columns:3; background:yellow;">
  <div style="position:relative;">
    <div style="position:absolute; width:100px; height:300px; background:blue;"></div>
  </div>
</div>
```

Gecko and Blink show three blue squares in a 100px tall yellow multicol container here, i.e. the OOF affects the height of the multicol container. Is this how we want things?

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/6279 using your GitHub account


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