HTML and CSS Reference
In-Depth Information
Opera did not support gradients until version 11, which was released in March 2011.
With the release of Opera 11.1, you can use both the linear-gradient() and
radial-gradient() functions if you include the -o- browser prefix.
At the time of this writing, Internet Explorer 10 (currently in Beta) supports the
-ms-linear-gradient() and -ms-radial-gradient() functions employing the
same syntax as the CSS3 functions. For earlier versions of Internet Explorer, you can
create a gradient only using the filter
Unlike the CSS
function, you can cre-
ate only circular radial
gradients with WebKit's
gradient() function.
Gradient(gradientType= type , startColorStr= #rrggbb ,
endColorStr= #rrggbb )
where type is either 0 for a vertical gradient or 1 for a horizontal gradient,
startColorStr indicates the starting color, and endColorStr indicates the end-
ing color. Color values must be entered as hexadecimals. The Internet Explorer filter
allows for transparent colors using the nonstandard hexadecimal string #aarrggbb ,
where aa is the opacity value of the color in hexadecimal. An alpha value of 00 is
used for completely transparent colors, while a value of FF is used for completely
opaque colors. Thus, the Gradient filter
Gradient(gradientType=0, startColorStr=#33D333,
creates a vertical gradient that starts with a fully opaque dark green and blends into a
fully transparent medium green. Note that the Gradient filter does not support radial
gradients, nor does it allow for color stops within a gradient or for linear gradients in
directions other than horizontal or vertical.
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