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iphone:UIWebview gradient background with CSS possible?

I want to give gradient to UIwebview's background which I load as:

    [self.webView  loadHTMLString:customHtml baseURL:nil];

but this html line does not give the effect, anyone knows how to do this better or can fix this css?

  开发者_如何学Go  [customHtml appendString:[NSString stringWithFormat:@"%@ ", @" <body style='background-color:#4b95bf; webkit-gradient(linear, left top, left bottom, from(#55aaee), to(#003366));'>"]];


The CSS is incorrect webkit-gradient() is not a property, rather it -webkit-gradient() is a value.

Rather the HTML should contain:

[customHtml appendString:[NSString stringWithFormat:@"%@ ", @" <body style='background-color:#4b95bf; background-image:-webkit-gradient(linear, left top, left bottom, from(#55aaee), to(#003366));'>"]];

Note the - before the webkit-gradient and the background-image:

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