W3C home > Mailing lists > Public > www-style@w3.org > January 2011

Re: width and height

From: Bruno <bruno5544@gmail.com>
Date: Tue, 25 Jan 2011 20:00:18 +0100
Message-ID: <AANLkTimovDtObOjXOZhmzVkJVFGMkk2Pkj6-wRWM3DmK@mail.gmail.com>
To: Anton Prowse <prowse@moonhenge.net>
Cc: www-style@w3.org
2011/1/25 Anton Prowse <prowse@moonhenge.net>:
> Yes, they do work for these so-called inline elements (such as <a>) which
> flow in a line rather like text (and whose most common purpose is indeed to
> contain text).  However, they don't always do what you expect: vertical
> margins and padding won't have any affect on the final position of the box,
> that is, they will bleed out of the line box in which the box sites and
> hence they will possibly overlap other line boxes and their contents.
> This is because line box height is intimately related to font size, and for
> inline elements it was decided that is typographically preferable to prevent
> vertical margin, border, padding and indeed height from influencing or
> overriding that behaviour.
> Insofar as width is concerned, it is the contents of the box which
> determines the width, and again it's not possible to override that. This is
> partly because the box might not lie on one line; it might be split over two
> or more lines instead, and its "end" might be further to the left than its
> "start" in left-to-right text rendering!  What would width even mean there?
> As Tab says, inline-block will solve your problem.
> Cheers,
> Anton Prowse
> http://dev.moohnhenge.net

But border is allowed under :hover, at least major browsers show it.

Why then allow 'padding' and 'margin' for :hover when they also brake
lines. Although 'margin' isn't that succesfull in this as 'padding'
property. Why allow one and other more logical solution is out of the
With padding (or margin) I'm practically forcing to do something that
should be done with normal properties (width&height).
Therefore I don't see any problems why not to allow width and height
also under :hover, it's just question of implementation of this into
UA, same as any other property.

Received on Tuesday, 25 January 2011 19:03:47 UTC

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