body {
  margin: 0;
  overflow: hidden;
  background: #000;
}
#mapCanvas {
  display: block;
  width: 100vw;
  height: 100vh;
  background-color: #111;
  cursor: grab;
}
#controls {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 10;
  background: rgba(255, 255, 255, 0.8);
  padding: 10px;
  border-radius: 8px;
  font-family: sans-serif;
}