:root {
  --app-background-color: transparent;
}

body {
  background: url(background.jpg);
  background-size: 100% auto;
  background-repeat: repeat;
  background-color: #548785;
}

@keyframes rotate_card {
  from {
    transform: rotate(1deg);
  }
  to {
    transform: rotate(0deg);
  }
}

.bcard {
  animation: rotate_card 2s;
}