CSS in mindmap

[GiusFr]

Hi
in the following sample I applied css style to modify text size in the node named "First" in mindmap diagram. It works properly.
Is there a way to change others properties for a mindmap node (background color, Text color etc...)?
Which css property may I use to correctly apply style in a mindmap diagram? Thanks

.cssClass {font-size: 40px;}

mindmap
(Root)
[First]
:::cssClass
Second