body {
  width: 100vw;
  height: 100vh;
  margin: 0;
  background: #34496a;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

#webgl {
  width: 800px;
  height: 600px;
  position: absolute;
  z-index: -1;
}

#webgl2 {
  position: absolute;
  top: 0;
  left: 0;
  outline: none;
  z-index: 2;
}

#bg-box {
  width: 802px;
  height: 602px;
  position: absolute;
  z-index: -1;
}

.svg-box {
  width: 800px;
  height: 600px;
  position: absolute;
  z-index: 1;
}
.svg-box #robot {
  cursor: pointer;
}