* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1a472a;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
canvas {
  display: block;
  width: 100%;
  height: 100%;
}
#controls {
  position: fixed;
  bottom: 10px;
  right: 10px;
  z-index: 10;
}