@keyframes pulsate {    
    100% {
        text-shadow:
        0 0 4px #fff,
        0 0 11px #fff,
        0 0 19px #fff,
        0 0 40px #f09,
        0 0 80px #f09,
        0 0 90px #f09,
        0 0 100px #f09,
        0 0 150px #f09;
    }
    
    0% {
        text-shadow:
        0 0 4px #fff,
        0 0 10px #fff,
        0 0 18px #fff,
        0 0 38px #f09,
        0 0 73px #f09,
        0 0 80px #f09,
        0 0 94px #f09,
        0 0 140px #f09;
    }
}