.btn-pulse {
    position: relative;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(0, 123, 255, 0.5);
    }
    50% {
        transform: scale(1.1);
        box-shadow: 0 0 10px 10px rgba(0, 123, 255, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(0, 123, 255, 0);
    }
}