@keyframes button-pulse {
    0% {
        opacity: 0.3;
        transform: scale3d(0.6, 0.4, 1);
    }
    75% {
        transform: scale3d(1.05, 1, 1);
    }
    100% {
        opacity: 0;
    }
}

@keyframes button-stretch {
    40% {
        transform: scale(0.96);
    }
    65% {
        transform: scale(1.02);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}