.cell .hex {
    width: 55px;
    position: absolute;
    z-index: -1;
    transform: translate(-50%, -50%);
}

.cell .spiral {
    width: 45px;
    position: absolute;
    animation: spin 1s linear infinite;
}

.cell.alive {
    animation: birth 1s linear forwards;
}

.cell.dead {
    animation: death 1s linear forwards;
}

#grid {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0px;
    left: 0px;
    overflow: hidden;
}

#controls {
    display: none;
}

@keyframes death {
    0% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

@keyframes birth {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}