.count-down {
    font-weight: bold;
    display: flex;
    justify-content: center;
    margin: 0.25rem auto;
    text-align: center;
}

.count-down > div {
    margin: 0 0.25rem;
    font-size: larger;
    border: solid 2px currentColor;
    min-width: 4em;
    aspect-ratio: 1 / 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.count-down span:not(.plain) {
    margin: 0;
    display: block;
    font-weight: normal;
    font-size: small;
}

.count-down.circle > div {
    border-radius: 50%;
}

@media only screen and (max-width: 480px) {
    .count-down > div {
        font-size: 1.5rem;
        min-width: 4.5rem;
        padding: 0.5rem 0.5rem;
    }
}