html, body {
  margin: 0;
  padding: 0;
}
body{
  background-color:rgb(205,221,235);
}
canvas {
  display: block;
  border-right: 2px solid rgb(50,50,50);
  border-left: 2px solid rgb(50,50,50);
  margin:auto;
  margin-bottom: 0;
  height: 500%;
  width: 500%;
}