body {
  touch-action: pan-x pan-y;
}
#singleTouchCanvas {
  background-color: #000000;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}
input[type="checkbox"] {
  position: relative;
  top: 2px;
}