body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: linear-gradient(135deg, #00c6ff, #0072ff);
  color: white;
  height: 100vh;
  margin: 0;
  overflow: hidden;
}

h1 {
  margin-top: 20px;
}

#game-area {
  position: relative;
  width: 100%;
  height: 80vh;
  margin-top: 20px;
}

#circle {
  width: 60px;
  height: 60px;
  background-color: yellow;
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: all 0.2s ease;
}