JAVA FX Change CSS of a button by Key Event

I have a button which changes it`s design when it is clicked. (Per CSS) Easy.

But i also wanted to enable the function that if you press ENTER it should also be pressed. That works, but I have a pseudoclass which sets the size of the button to 90% (.button:pressed).

Problem: It doesn`t work when the enter key is pressed. The click works fine. Is there any css pseudoclass for key typed or so?

Using SceneBuilder

CSS:

.button{
        -fx-background-image: url("../resources/Game/cookie.png");
        -fx-background-color: transparent;
}
.button:pressed{
    -fx-background-size: 90%;
    -fx-background-position: center;
}

Thank you in advance :)