A cool feature now in Flex is media queries. Media queries allow you to deliver different CSS, depending on either the device OS or the pixel density of the device. This is very useful for tweaking your apps to work with the different standards for UI across devices.
But there’s no mention of BlackBerry PlayBook. After a little digging, I found this tidbit in the original sdk docs.
os-platform (allowed values are “Android”, “IOS”, “Macintosh”, “Windows”, “Linux”. Other values are allowed and will be matched against the three character platform abbreviation in Capabilities.version in case new platforms become available).
Which means the example below totally works for BlackBerry PlayBook.