body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: url('images/fondo2.png') no-repeat center center fixed;
    background-size: cover;
    overflow: hidden;
  }
  
  #game-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
  }
  
  #score-board, #timer, #pause-button {
    position: absolute;
    top: 10px;
    font-size: 20px;
    font-weight: bold;
    color: white;
    background: rgba(0, 0, 0, 0.5);
    padding: 10px;
    border-radius: 5px;
  }
  
  #score-board {
    left: 10px;
  }
  
  #timer {
    right: 10px;
  }
  
  #pause-button {
    left: 50%;
    transform: translateX(-50%);
    top: 50px;
    cursor: pointer;
    border: none;
    outline: none;
  }
  
  .bubble {
    position: absolute;
    width: 50px;
    height: 50px;
    background-size: cover;
    background-position: center;
    border-radius: 50%;
    cursor: pointer;
    animation: float 5s linear infinite;
  }
  
  .paused .bubble {
    animation-play-state: paused; /* Pausar animación */
  }
  
  @keyframes float {
    0% {
      transform: translateY(100%);
      opacity: 1;
    }
    100% {
      transform: translateY(-10%);
      opacity: 0;
    }
  }
  