body {
  background-image: url('img/_Q4I0330.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

@keyframes explode {
  0% {
    transform: scale(0.2);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.explode {
  animation: explode 0.6s ease-out forwards;
}