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Neal - 26 Dec 2003 10:39 GMT

I know transparent is an acceptable value for color, but under what
circumstances? Where is it described on w3c.org?

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brucie - 26 Dec 2003 10:56 GMT

in post <news:3fec107a$0$4739$61fed72c@news.rcn.com>
Neal said:

> I know transparent is an acceptable value for color,

its not.

> Where is it described on w3c.org?

http://www.w3.org/TR/REC-CSS2/colors.html

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brucie
26/December/2003 08:49:32 pm kilo

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Andrew Thompson - 26 Dec 2003 18:18 GMT

> in post <news:3fec107a$0$4739$61fed72c@news.rcn.com>
> Neal said:
[quoted text clipped - 3 lines]
> its not.
> http://www.w3.org/TR/REC-CSS2/colors.html

Huh! It'd never ocurred to me that 'transparent'
was not a valid _color_, but then, ..I'd never
wanted to set text invisible.

Why would you want to do that, Neal?

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Andrew Thompson
* http://www.PhySci.org/ PhySci software suite
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David Dorward - 26 Dec 2003 18:34 GMT

>> > I know transparent is an acceptable value for color,

> Huh! It'd never ocurred to me that 'transparent'
> was not a valid _color_, but then, ..I'd never
> wanted to set text invisible.

> Why would you want to do that, Neal?

body { background-color: black; background-image: url(pretty.png); }
div { background-color: black; }
div#somediv { background-color: transparent; }

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David Dorward <http://dorward.me.uk/>

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Neal - 26 Dec 2003 20:37 GMT

> in post <news:3fec107a$0$4739$61fed72c@news.rcn.com>
> Neal said:
>
> > I know transparent is an acceptable value for color,
>
> its not.

I used "color" as a catch-all word while you thought of it as a specific
property as differentiated from say background-color. That's where our wires
were crossed.

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David Dorward - 26 Dec 2003 18:40 GMT

> I know transparent is an acceptable value for color, but under what
> circumstances? Where is it described on w3c.org?

Ah... it depends.

In CSS 2, transparent is not an acceptable value for a color, however some
properties which accept a color as their value _also_ accept the
transparent keyword. This is desribed in the list of values for that
property.

For example:

'background-color'
Value: <color> | transparent | inherit

However, in CSS 3, this (may) changes, and 'transparent' becomes a colour.

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David Dorward <http://dorward.me.uk/>

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Neal - 26 Dec 2003 20:34 GMT

> > I know transparent is an acceptable value for color, but under what
> > circumstances? Where is it described on w3c.org?
[quoted text clipped - 12 lines]
>
> However, in CSS 3, this (may) changes, and 'transparent' becomes a colour.

Ah, now I remember. You can use it for background-color because it's the
default. It would make no sense to have transparent "color" for the text,
hmm.

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Webmaster Forum / HTML, CSS, Scripts / CSS / December 2003

Transparent