/* Pulsating Hearth */
.fa-beat {
    animation:fa-beat 5s ease infinite;
}
@keyframes fa-beat {
    0% {
        transform:scale(1);
    }
    5% {
        transform:scale(1.25);
    }
    20% {
        transform:scale(1);
    }
    30% {
        transform:scale(1);
    }
    35% {
        transform:scale(1.25);
    }
    50% {
        transform:scale(1);
    }
    55% {
        transform:scale(1.25);
    }
    70% {
        transform:scale(1);
    }
}

.heart {
    color:red;
}