* {
  -webkit-user-select: none;
  user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #222;
}

.game {
  /*border: 4px solid red;*/
  /*margin: 20px auto;*/
}

canvas {
  /*width: 100%;*/
  /*border: 4px solid green;*/
}