body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #333;
    color: #fff;
  }
  
  .container {
    position: relative;
    max-width: 800px;
    width: 100%;
  }
  
  #video, #canvas {
    width: 100%;
    display: block;
  }
  
  #playButton {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 10px 20px;
    background-color: #007BFF;
    border: none;
    color: #fff;
    cursor: pointer;
    display: none;
  }
  
  #loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: none;
  }