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Posted by Jukka K. Korpela on 09/12/07 14:53
Scripsit JL:
> ... can I be
> confident that *all* browsers will position the background image at
> the far left of the container if I omit any background-position
> property?
Theoretically, no, since browsers may have default values that differ from
the initial value for a property.
> Or should I specify 'left' to be on the safe side?
Why do you ask? If you want 'left', why don't you just say so in your CSS
code?
> So, IOW, if I do this:
>
> #container {
> width: 100px;
> background: #FFF shadow.gif repeat-y;
> }
That's syntactically incorrect, as a CSS checker like
http://jigsaw.w3.org/css-validator/
would have told you. You need to write e.g. url(shadow.gif) instead of just
shadow.gif.
But with this fixed, here you _are_ setting background-position (to 0% 0%,
which is equivalent to top left), since the background shorthand _always_
sets _all_ background properties.
>... should I throw in a 'left':
>
> background: #FFF shadow.gif left repeat-y;
That's a matter of taste; maybe it's more informative to someone reading the
CSS code. But it makes no difference in meaning.
--
Jukka K. Korpela ("Yucca")
http://www.cs.tut.fi/~jkorpela/
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