W3C home > Mailing lists > Public > www-style@w3.org > February 2010

collapsible property

From: Ojan Vafai <ojan@chromium.org>
Date: Wed, 10 Feb 2010 16:36:25 -0800
Message-ID: <78dc8441002101636w5724ff22oaa686cbf25eba071@mail.gmail.com>
To: www-style@w3.org, Daniel Danilatos <danilatos@google.com>, Julie Parent <jparent@chromium.org>
Collapsed block nodes make little sense when dealing with rich-text
user-generated content. Rich-text libraries need to go through all sorts of
contortions right now in performance sensitive code to get around this.
Browser's themselves do things to avoid collapsing nodes (e.g. putting magic
BRs in empty block elements). These workarounds are costly and don't always

Proposal: Add a collapsible property. Defaults to "auto".
auto: the current behavior of collapsing block elements when they are empty
never: empty elements don't collapse.

p {
  collapsible: never;


P.S. Apologies if this has already been discussed. I couldn't find anything
in the archives.
Received on Thursday, 11 February 2010 00:37:16 UTC

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