.background-shader {
  background: -webkit-canvas(squares);
  display: inline;
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  z-index: -100;
  opacity: 0%;
  animation: fade-in-10 1.5s forwards;
  animation-delay: 0.3s;
}