@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }

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

.record.pulse {
    animation-name: pulse;
    animation-duration: 1s;
    animation-iteration-count: infinite;
    color: red;
}