“Mui Animación” Código de respuesta

Mui Animación

 animatedItem: {
    animation: `$myEffect 1000ms ${theme.transitions.easing.easeInOut}`,
  },
  "@keyframes myEffect": {
    "0%": {
      opacity: 0,
      transform: "translateY(300%)",
    },
    "100%": {
      opacity: 1,
      transform: "translateY(0)",
    },
  },