.countdown {
  display: flex;
}

.countdown .day,
.countdown .hour,
.countdown .min,
.countdown .sec {
  color: #2799ff;
  padding: 1vw 3vw;
  text-align: center;
}

.countdown .day .num,
.countdown .hour .num,
.countdown .min .num,
.countdown .sec .num {
  display: block;
  font-size: 6vw;
  line-height: 1em;
}

.countdown .day .word,
.countdown .hour .word,
.countdown .min .word,
.countdown .sec .word {
  display: block;
  font-size: 2vw;
  color: #8a99ab;
}