#canvas{
  width: 80vmin;
  margin: 18vmin auto 3vmin auto;
  height: 45vmin; 
  background-color: rgb(196,0,0);
  position: relative;  
}

#black{
  left: 17%;
  top: 0%;
  width: 83%;
  height: 40%;
  background-color: rgb(35,28,33);
  position: absolute;  
}