body {
  background-color: #24252D;
  position: absolute;
  margin: 0;
  top:0;
  left:0;
  width: 100%;
  height: 100%;
}

body * {
  display: none;
}

#main,
#main * {
  display: block;
  width: 15vw;
  margin: 45vh auto;
}