body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background-color: skyblue;
}

#game-container {
  position: relative;
  width: 800px;
  height: 600px;
  background-color: lightblue;
  border: 2px solid black;
}

#airplane {
  position: absolute;
  width: 50px;
  height: 50px;
  background-image: url('airplane.png');
  background-size: cover;
  top: 400px;
  left: 0;
}

#runway {
  position: absolute;
  width: 100%;
  height: 50px;
  background-color: gray;
  bottom: 0;
}

#touchdown-zone {
  position: absolute;
  width: 20%;
  height: 100%;
  background-color: rgba(255, 255, 0, 0.5);
  left: 10%;
}

#stop-zone {
  position: absolute;
  width: 35%;
  height: 100%;
  background-color: rgba(0, 255, 0, 0.5);
  left: 60%;
}

#controls {
  margin-top: 10px;
}

#scores {
  display: inline-block;
  margin-left: 10px;
}