body {
  margin: 0;
  overflow: hidden;
  background-color: #ffffff;
}

#game-area {
  position: relative;
  width: 100vw;
  height: 100vh;
}

#bouncy {
  position: absolute;
  width: 100px;
  height: 100px;
  top: 200px;
  left: 200px;
  cursor: pointer;
}