html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  touch-action: none;
  user-select: none; /* supported by Chrome and Opera */
  -webkit-user-select: none; /* Safari */
  -khtml-user-select: none; /* Konqueror HTML */
  -moz-user-select: none; /* Firefox */
  -ms-user-select: none; /* Internet Explorer/Edge */
}
canvas {
  display: block;
}