* {
  margin: 0;
  padding: 0;
  overflow: hidden;
}
#game {
  margin: 5px;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}
#canvas {
  background-color: black;
  cursor: none;
}