 groung color on switching from light to dark mood */
  background: #e8e8e8;
  transform: translateZ(200px) rotate(var(--r));
  -webkit-animation: mask var(--duration) linear forwards infinite;
  animation: mask var(--duration) linear forwards infinite;
}

.loader:after {
  --r: -20.5deg;
  right: auto;
  left: 32%;
}

.loader .ground {
  position: absolute;
  left: -50px;
  bottom: -120px;
  transform-style: preserve-3d;
  transform: rotateY(-47deg) rotateX(-15deg) rotateZ(15deg) scale(1);
}

.loader .grou