* {
  font-family: arial, sans-serif;
}

html, body {
  height: 100%;
  width: 100%;
  padding: 0;
  border: 0;
  margin: 0;
  background: rgb(25, 25, 25);
}

canvas {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}