.post-countdown {
    margin: 20px 0;
    padding: 15px;
    background: #f5f5f5;
    border-radius: 5px;
    text-align: center;
}

.countdown-timer {
    font-size: 24px;
    font-weight: bold;
    color: #333;
}

.countdown-timer span {
    display: inline-block;
    min-width: 40px;
}