.blink

{
    animation: blink 3s infinite;
}

@keyframes blink {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0;
        transform: scale(2);
    }

    51% {
        opacity: 0;
        transform: scale(0);
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}