.countdown-container {
    display: flex;
    width: 100%;
    max-width: 70%;
    justify-content: space-between;
}

.days-container,
.hours-container,
.minutes-container,
.seconds-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: rgba(0,0,0,0.1);
    border: 5px solid rgba(255,255,255,0.3);
    width: 140px;
    height: 140px;
    border-radius: 99px;
}

.days,
.hours,
.minutes,
.seconds {
    font-size: 2.5em;
    margin: 10px 0;
}


.days-label,
.hours-label,
.minutes-label,
.seconds-label {
    text-transform: uppercase;
    margin-bottom: 5px;
}

@media (max-width: 800px) {

    .countdown-container {
        max-width: 90%;
    }

    .days-container,
    .hours-container,
    .minutes-container,
    .seconds-container {
        font-size: 0.8em;
        width: 100px;
        height: 100px;
    }
}