Javafx Video Game Start Screen with small animation

Hello, need little help for a video game projekt with Java fx. My part was also to make the start Screen with a small animation the "start game" button and then to display the menu. The animation can be this meteorits to going from right to left and the the start game button. Muss something easy and all you have todo is click the design with the scene Builder and the implement 3 classes. Need this asap coz need to present to my klass. thanks check the screens ANd also to explain me what you do to tell this on my presentation