For modena.css (the default JavaFX look and feel definition in Java 8), a slight shaded background was introduced for all controls (and also to panes if a control is loaded). You can remove this by specifying that the default background is transparent. This can be done by adding the following line to your application’s CSS … Read more
Why your code does not work The loader creates a new AnchorPane, but you never add the new pane to a parent in the scene graph. Quick Fix Instead of: content = (AnchorPane) FXMLLoader.load(“vista2.fxml”); Write: content.getChildren().setAll(FXMLLoader.load(“vista2.fxml”)); Replacing the content children with your new vista. The content itself remains in the scene graph, so when you … Read more
As @James_D already said you have to pass a non-null event to get the stage variable, and you should also change the scene in the same stage instead of creating a new stage again, ’cause this will not take care of resources and will slow down the application. Also, looking at your login code, I … Read more