CSS box model: Difference between revisions

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Revision as of 13:13, 31 May 2025

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Various workarounds have been devised to force Internet Explorer versions 5 and earlier to display Web pages using the W3C box model. These workarounds generally exploit unrelated bugs in Internet Explorer's CSS selector processing in order to hide certain rules from the browser. The best known of these workarounds is the "box model hack" developed by [[Tantek Çelik]], a former Microsoft employee who developed this idea while working on Internet Explorer for the Macintosh. It involves specifying a width declaration for Internet Explorer for Windows, and then overriding it with another width declaration for CSS-compliant browsers. This second declaration is hidden from Internet Explorer for Windows by exploiting other bugs in the way that it parses CSS rules. The implementation of these CSS "hacks" has been further complicated by the public release of Internet Explorer&nbsp;7, which has had some issues fixed, but not others, causing undesired results in pages using these hacks.<ref name="msdn IE7 blog"/>

Box model hacks have proven unreliable because they rely on bugs in browsers' CSS support that may be fixed in later versions. For this reason, some Web developers have instead recommended either avoiding specifying both width and padding for the same element or using [[conditional comment]] and/or [[CSS hack|CSS filter]]s to work around the box model bug in older versions of Internet Explorer.<ref name=RJ1 /><ref>{{Cite web | url=http://virtuelvis.com/archives/2004/02/css-ie-only | title=Hack-free CSS for IE | author=Arve Bersvendsen | date=February 2004 | work=Arve Bersvendsen's weblog | access-date=2007-01-16 | url-status=dead | archive-url=https://web.archive.org/web/20070115183512/http://virtuelvis.com/archives/2004/02/css-ie-only | archive-date=15 January 2007 | df=dmy-all }}</ref>

==Support for Internet Explorer's box model==