How to make GWT RichTextArea transparent under Internet Explorer?

By default G开发者_如何学GoWT RichTextArea is transparent against the body background etc, this is true for Firefox, Chrome and Safari. But for Internet Explorer, it is not. Changing the css for like background-color etc doesn't seems to help, it is still giving me a white background within RichTextArea.

Need your assistance, thanks in advance :)

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Check if the RichTextArea component uses iframe element - it's body should have style background-color set to "transparent". The iframe element itself should have allowtransparency attribute set to "true".