body{
  background-color: black;
}
#canvas{
  position: relative;
  background-color: rgb(221, 221, 221);
  margin:15vmin auto;
  width:40vmin;
  height:60vmin;

}
#blackbox{
  position:relative;
  background-color: rgb(28, 28, 29);
  left: 0vmin;
  top: 0vmin;
  width: 17.5vmin;
  height: 60vmin;
}
#whitebox{
  position:relative;
  background-color: rgb( 221, 221, 221);
  left:7vmin;
  bottom: 52vmin;
  width: 5vmin;
  height: 30vmin;
}
#greybox{
  position:relative;
  background-color: rgb(149, 149, 149);
  left:12vmin;
  bottom:60vmin;
  width: 5.5vmin;
  height: 30vmin;
}