@keyframes flash {
  0%, 50%, 100% {
    opacity: 1;
  }
  25%, 75% {
    opacity: 0;
  }
}
.test-1 {
  animation-name: bounce;
  animation-duration: 1s;
  animation-fill-mode: both;
  transform-origin: center bottom;
}
@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transition-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    transform: translate3d(0, 0, 0);
  }
  40%, 43% {
    transition-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
    transform: translate3d(0, -30px, 0);
  }
  70% {
    transition-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0, -4px, 0);
  }
}
.test-2 {
  animation-name: bounce;
  animation-duration: 1s;
  animation-fill-mode: both;
  transform-origin: center bottom;
}
.test-3 {
  animation-name: bounceIn;
  animation-duration: 2s;
  animation-fill-mode: both;
}
@keyframes bounceIn {
  0%, 20%, 40%, 60%, 80%, 100% {
    transition-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
  }
  0% {
    opacity: 0;
    transform: scale3d(0.3, 0.3, 0.3);
  }
  20% {
    transform: scale3d(1.1, 1.1, 1.1);
  }
  40% {
    transform: scale3d(0.9, 0.9, 0.9);
  }
  60% {
    opacity: 1;
    transform: scale3d(1.03, 1.03, 1.03);
  }
  80% {
    transform: scale3d(0.97, 0.97, 0.97);
  }
  100% {
    opacity: 1;
    transform: scale3d(1, 1, 1);
  }
}
.test-4 {
  animation-name: bounceIn;
  animation-duration: 0.5s;
  animation-fill-mode: forwards;
}
