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

body {
  background-color: #000;
}

.canvas {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
}

.finger {
  display: none;
}
@media (max-width: 800px) {
  .finger {
    display: block;
    position: fixed;
    z-index: 9;
    left: 50%;
    transform: translateX(-50%);
    top: 10%;
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
  }
}