unexpand text

#unexpand {
  font-size:  2em;
    animation: text-shadow 2s ease-in-out infinite;
}

@keyframes text-shadow {
    0% {
        text-shadow: 0px 1px grey, 0px -1px grey;
    }

    20% {
        text-shadow: 0px 4px grey, 0px -4px grey;
    }

    40% {
        text-shadow: 0px 2.5px grey, 0px -2.5px grey;
    }

    60% {
        text-shadow: 0px 5.5px grey, 0px -5.5px grey;
    }

    80% {
        text-shadow: 0px 2px grey, 0px -2px grey;
    }

    100% {
        text-shadow: 0px 0px grey, 0px 0px grey;
    }