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RE: CSS 中 border-width 为何不支持百分比?

From: chaixiaoxing <public_00@hotmail.com>
Date: Fri, 31 May 2013 10:57:09 +0000
Message-ID: <SNT135-W32127A2FCA2529E26CFF8C91920@phx.gbl>
To: 一丝 <yiorsi@gmail.com>, public-html-ig-zh <public-html-ig-zh@w3.org>
www-style邮件组里有人这么问了,“% is not a valid unit for border-width”。决策者当时觉得没什么需求,而且有些(浏览器)实现有不均bug,就抛弃了。也许以后会加上。看回复有个同学提供了历史会话:
issue #2
--------
fantasai: percentage border width, issue 26
... any pressing reason to add this?

daniel: is there a use case for this?
fantasai: don't know one
daniel: don't see border width specified this way, rather in pixel; jason?
jason: agree. can't think of a use case where the percentage border width is to be  used.
<dbaron> I would note that one reason you don't see non-pixel borders is that
... some implementations (e.g., older version of Gecko) will often make them uneven,
... which isn't what authors want.

molly: the only place (I can think of) is scalable design; not someone is practicing  these days.
david b: [repeating his comments above]

<fantasai> jason: I don't think it will make or break any designs
daniel: so we can resolve it by not doing this for now
<fantasai> RESOLVED: no percentage bordershttp://lists.w3.org/Archives/Public/www-style/2008Jun/0032.html





From: yiorsi@gmail.com
Date: Fri, 31 May 2013 16:39:14 +0800
To: public-html-ig-zh@w3.org
Subject: CSS 中 border-width 为何不支持百分比?

在 CSS2.1 中可以看到:http://www.w3.org/TR/CSS21/box.html#border-width-properties



'border-top-width', 'border-right-width', 'border-bottom-width', 'border-left-width'
Percentages: N/A

 		 	   		  
Received on Friday, 31 May 2013 10:57:38 UTC

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