body {
  background: radial-gradient(circle, rgba(221,227,235,1) 0%, rgba(25,78,128,1) 100%);
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  text-align: center;
}

h1 {
  color: #333;
}

#countdown, #preparationCountdown {
  font-size: 13em;
  font-weight: 600;
  color: #042c5f;
  /*border: 2px solid #000;
  border-radius: 10px;
  padding: 20px;
  margin-top: 20px;*/
  background-image: url("image2.png");
  background-size: cover;
  /*background-color: #FFF;*/
  width: 600px;
  height: 600px;
  /*line-height: 160px;
  animation: pulse 1s infinite;
  cursor: pointer;*/
  align-items: center;
  display: flex;
  justify-content: center;
}

#preparationCountdown {
  font-size: 13em;
  font-weight: 600;
  color: #042c5f;
  background-image: url("image2.png");
  background-size: cover;
  width: 600px;
  height: 600px;
  animation: pulse 1s infinite;
  cursor: pointer;
  align-items: center;
  display: flex;
  justify-content: center;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}