body{
  background-color: #777777;
}
h1{
  font-size: 50px;
  color: black;
  text-align: center;
}
canvas {
  background: #e8e8e8;
  display: block;
  justify-content: center;
  margin: 40px auto;        
  border: 4px solid rgb(80, 80, 80); 
  width: 800px;  
  height: 600px;
}