body {
    background-color: black;
    font-family: monospace;
}

#lights {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    margin: auto;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 1em;
}

.light {
    width: 8em;
    height: 8em;
    background-color: darkgray;
    border-radius: 4em;
}

@keyframes lights-out {
    from {
        background-color: darkgray;
    }

    to {
        background-color: red;
    }
}

#result {
    font-size: 4em;
    color: white;
    text-align: center;
}