html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.container {
  width: 100vw;
  height: 100vh;
  position: relative;
}

a-scene {
  width: 100vw;
  height: 100vh;
  position: absolute;
  top: 0;
  left: 0;
}
    #toggle-music-button {
      position: fixed;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 1000;
      background-color: rgba(0, 0, 0, 0.7);
      border: none;
      border-radius: 50%;
      padding: 15px;
      color: white;
      font-size: 24px;
      cursor: pointer;
      display: none; /* tersembunyi di awal */
      transition: background 0.3s ease;
    }
    #toggle-music-button:hover {
      background-color: rgba(0, 0, 0, 0.9);
    }