.spinningIcon{
    text-align: center;
    animation: spinning 2s linear 0s infinite normal;
    width: auto;
    margin: auto;
    transform-origin: center;
}

@keyframes spinning{
    from{
        font-size: 4em;
        transform: rotate(0deg);
    }
    50% {
        font-size: 5em;
        transform: rotate(180deg);
    }
    to{
        font-size: 4em;
        transform: rotate(360deg);
    }
}