在CSS中嵌入边框-半径形状?

Is there a way I can make this shape image in CSS ? CSS3 is fine, no need for IE compatibility .The gradient part of it is not important, it's that curve on the bottom right that I can't see how to do. I've seen various jQuery corner plugins but nothing that'll work for me so far. I can't use a background image as the content in this will be of variable length.Is there a way I can make this shape image in C