@nbamford123/arwes/src/Appear/styles.js

Futuristic Sci-Fi and Cyberpunk Graphical User Interface Framework for Web Apps

export default (theme) => {
  return {
    root: {
      display: 'inline-block',
      opacity: 1,
      transition: `opacity ${theme.animTime}ms ease-out`,

      '&$exiting, &$exited': {
        opacity: 0,
      },
    },

    entering: {},
    entered: {},
    exiting: {},
    exited: {},
  };
};