.light-mode {
  background: linear-gradient(rgba(236, 234, 113, 1), rgba(35, 35, 32, 0) 30%);
  position: fixed;
  width: 100vw;
  height: 400vh;
  border-radius: 50% 50% 0 0;
  -webkit-filter: blur(5px);
  filter: blur(5px);
  z-index: 9000;
  opacity: 1;
  pointer-events: none;
  transform-origin: top center;
  animation: swing 9s ease-in-out infinite;
}

@keyframes swing {
  0%   { transform: rotate(-15deg); }
  50%  { transform: rotate( 15deg); }
  100% { transform: rotate(-15deg); }
}