const shimAnimation = keyframes({
  '0%': {
    backgroundPosition: '0 0', // horizontal, vertical
  },
  '100%': {
    backgroundPosition: `${window.innerWidth}px 0`,
  },
});

const ANIMATION_BACKGROUND_BUNDLE = {
  background: 'linear-gradient(to right, #eeeeee 0%, #dddddd 10%, #eeeeee 25%)',
  animationName: shimAnimation,
  animationDuration: '1s',
  animationFillMode: 'forwards',
  animationIterationCount: 'infinite',
  animationTimingFunction: 'linear',
};

gray: { position: 'relative', overflow: 'hidden' } 

blue: {
  position: 'absolute',
  top: -20,
  left: -20,
  borderRadius: '50%',
  borderWidth: '20px solid blue',
}