.pulse {
    box-shadow: 0 0 0 0 rgba(0, 0, 0, 1);
    transform: scale(1);
    animation-name: pulse;
    animation-duration: 2s;
    animation-iteration-count: 1;
}

@keyframes pulse {
    0% {
        transform: scale(0.9);
        box-shadow: 0 0 0 0 rgba(26, 29, 57, 0.7);
    }

    70% {
        transform: scale(0.95);
        box-shadow: 0 0 0 10px rgba(26, 29, 57, 0);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(26, 29, 57, 0);
    }
}