.p-top-fv__model {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.threejs-bg {
  position: absolute;
  z-index: 1;
  top: -5%;
  left: 0;
  width: 100%;
  height: 100%;
}
.threejs-bg {
  opacity: 0;
  transition: all 0.3s ease;
}
.threejs-bg.is-loaded {
  opacity: 1;
}
@media screen and (max-width: 960px) {
  .threejs-bg {
    top: -10%;
  }
}
@media screen and (max-width: 480px) {
  .threejs-bg {
    top: -15%;
  }
}