body {
  --transition-duration: 0.3s;
  --fast-transition-duration: 0.2s;
  --slow-transition-duration: 0.6s;
  --transition-fn: cubic-bezier(0.4, 0, 0.2, 1);
  --bounce-transition-fn: cubic-bezier(0.54, 1.12, 0.38, 1.11);

  --transition: all var(--transition-duration) var(--transition-fn);
  --bounce-transition: all var(--transition-duration)
    var(--bounce-transition-fn);
  --fast-transition: all var(--fast-transition-duration) var(--transition-fn);
  --slow-transition: all var(--slow-transition-duration) var(--transition-fn);

  @keyframes shake {
    0% {
      transform: translate(1px, 1px);
    }
    10% {
      transform: translate(-1px, -2px);
    }
    20% {
      transform: translate(-3px, 0px);
    }
    30% {
      transform: translate(3px, 2px);
    }
    40% {
      transform: translate(1px, -1px);
    }
    50% {
      transform: translate(-1px, 2px);
    }
    60% {
      transform: translate(-3px, 1px);
    }
    70% {
      transform: translate(3px, 1px);
    }
    80% {
      transform: translate(-1px, -1px);
    }
    90% {
      transform: translate(1px, 2px);
    }
    100% {
      transform: translate(1px, -2px);
    }
  }

  .shake {
    animation: shake 0.2s;
    animation-iteration-count: infinite;
  }
}