front/src/components/boxs/alarm/countdown.css
.countdown {
font-size: 5em;
color: #333;
font-weight: bold;
text-align: center;
}
.countdownTimer {
display: inline-block;
padding: 10px;
transition: transform 0.5s, opacity 0.5s;
}
.countdownTimer.updated {
transform: scale(0.9);
opacity: 0.7;
}