@keyframes pulse {
    0% {
        transform: scale(.85);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 50px rgba(#5a99d4, 0);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(#5a99d4, 0);
    }
}