.countdown {
  margin: 0 auto;
  max-width: 350px;
  background: #006838;
  font-family: Impact, Charcoal, sans-serif;
  text-align: center;
}
.countdown .header {
  color: #fff;
  text-align: center;
  font-weight: normal;
  margin: 5px 0 10px 0;
}
.countdown .square {
  display: inline-block;
  padding: 10px;
  margin: 5px;
}
.countdown .digits {
  font-size: 24px;
  background: #fff;
  color: #000;
  padding: 20px 10px;
  border-radius: 5px;
}
.countdown .text {
  margin-top: 10px;
  color: #ddd;
}