html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.bg {
    position: relative;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    
  }
.allbg,
.apic,
.ascrew,
.lip,
.book,
.bscrew,
.luke,
.lknife,
.music,
.mscrew{
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
}