body {
  margin: 0;
  padding: 0;
  font-family: 'Noto Sans', sans-serif;
}

/* Parallax layers */
.parallax-layer {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
  will-change: transform;
}
.bg1 { background-image: url('https://images.unsplash.com/photo-1549887534-3db1bd59dcca?auto=format&fit=crop&w=1600&q=80'); z-index: 1; }
.bg2 { background-image: url('https://images.unsplash.com/photo-1505739964-88c1c1d4b9bb?auto=format&fit=crop&w=1600&q=80'); z-index: 2; }
.bg3 { background-image: url('https://images.unsplash.com/photo-1501785888041-af3ef285b470?auto=format&fit=crop&w=1600&q=80'); z-index: 3; opacity: 0.8; }