*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  overflow: hidden;
  background: #0a1a0a;
  width: 100vw;
  height: 100vh;
}

#money-rain {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.bill {
  position: absolute;
  top: -100px;
  animation: fall linear forwards, sway ease-in-out infinite;
  user-select: none;
}

@keyframes fall {
  to {
    top: 110vh;
    transform: rotate(var(--end-rotation));
  }
}

@keyframes sway {
  0%, 100% {
    margin-left: 0;
  }
  50% {
    margin-left: var(--sway-distance);
  }
}