左上角和右上角在Javafx / CSS中呈圆角

I would like to create a Pane with 2 rounded corners top-left and top-right, how can i do this in javafx? I know that u can use "border-top-left-radius" in normal css but it wont work under javafx. Until now I tried:I would like to create a Pane with 2 rounded co