*{
  margin: 0;
}

body{
  min-height: calc(100vh + 180px);
  overflow-x: hidden;
}

.foreground{
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

#foreground-1{ z-index: 4; }
#foreground-2{ z-index: 3; }
#foreground-3{ z-index: 2; }
#foreground-4{ z-index: 1; }
#foreground-5{ z-index: 5; }

#layer-1{
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: auto;
  z-index: 1;
}

#layer-2{
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: auto;
  z-index: 1;
}

#layer-3{
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: auto;
  z-index: 1;
}

#layer-4{
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: auto;
  z-index: 1;
}

#layer-5{
  position: absolute;
  top: -4vh;
  left: 0;
  width: 100vw;
  height: auto;
  z-index: 1;
  pointer-events: none;
}